Merge branch 'master' into ci-tables-ui-improvementsci-tables-ui-improvements

* master: (196 commits)
  Add quotes to coverage pattern
  Update CHANGELOG.md
  Bump omniauth to 1.4.2
  Bump Hashie to 3.5.5 to eliminate warning noise
  use single backticks for inline code
  Add performance query regression fix for !9088 affecting #27267
  Fix spec
  API: Return 400 for all validation erros in the mebers API
  Adds confirmation for cancel button
  Add newline
  Corrected indentation on the template string
  Adds backoff algo from EE to CE
  We don't need these checks anymore
  Raise error when no content is provided
  Address review
  Update API v3 in line with v4
  Fix new offenses
  Fix spec
  Fix specs
  Rename commit_file, commit_dir and remove_file and update specs
  ...

158 files changed, 1715 insertions, 1274 deletions

diff --git a/app/assets/javascripts/ajax_loading_spinner.js b/app/assets/javascripts/ajax_loading_spinner.js
new file mode 100644
index 00000000000..38a8317dbd7
--- /dev/null
+++ b/app/assets/javascripts/ajax_loading_spinner.js
@@ -0,0 +1,35 @@
+class AjaxLoadingSpinner {
+  static init() {
+    const $elements = $('.js-ajax-loading-spinner');
+
+    $elements.on('ajax:beforeSend', AjaxLoadingSpinner.ajaxBeforeSend);
+    $elements.on('ajax:complete', AjaxLoadingSpinner.ajaxComplete);
+  }
+
+  static ajaxBeforeSend(e) {
+    e.target.setAttribute('disabled', '');
+    const iconElement = e.target.querySelector('i');
+    // get first fa- icon
+    const originalIcon = iconElement.className.match(/(fa-)([^\s]+)/g).first();
+    iconElement.dataset.icon = originalIcon;
+    AjaxLoadingSpinner.toggleLoadingIcon(iconElement);
+    $(e.target).off('ajax:beforeSend', AjaxLoadingSpinner.ajaxBeforeSend);
+  }
+
+  static ajaxComplete(e) {
+    e.target.removeAttribute('disabled');
+    const iconElement = e.target.querySelector('i');
+    AjaxLoadingSpinner.toggleLoadingIcon(iconElement);
+    $(e.target).off('ajax:complete', AjaxLoadingSpinner.ajaxComplete);
+  }
+
+  static toggleLoadingIcon(iconElement) {
+    const classList = iconElement.classList;
+    classList.toggle(iconElement.dataset.icon);
+    classList.toggle('fa-spinner');
+    classList.toggle('fa-spin');
+  }
+}
+
+window.gl = window.gl || {};
+gl.AjaxLoadingSpinner = AjaxLoadingSpinner;
diff --git a/app/assets/javascripts/application.js b/app/assets/javascripts/application.js
index 8e468faedbf..53d8d313e39 100644
--- a/app/assets/javascripts/application.js
+++ b/app/assets/javascripts/application.js
@@ -6,12 +6,8 @@
 /* global AwardsHandler */
 /* global Aside */
 
-function requireAll(context) { return context.keys().map(context); }
-
 window.$ = window.jQuery = require('jquery');
-require('jquery-ui/ui/autocomplete');
 require('jquery-ui/ui/draggable');
-require('jquery-ui/ui/effect-highlight');
 require('jquery-ui/ui/sortable');
 require('jquery-ujs');
 require('vendor/jquery.endless-scroll');
@@ -46,15 +42,176 @@ require('./shortcuts_dashboard_navigation');
 require('./shortcuts_issuable');
 require('./shortcuts_network');
 require('vendor/jquery.nicescroll');
-requireAll(require.context('./behaviors',  false, /^\.\/.*\.(js|es6)$/));
-requireAll(require.context('./blob',       false, /^\.\/.*\.(js|es6)$/));
-requireAll(require.context('./templates',  false, /^\.\/.*\.(js|es6)$/));
-requireAll(require.context('./commit',     false, /^\.\/.*\.(js|es6)$/));
-requireAll(require.context('./extensions', false, /^\.\/.*\.(js|es6)$/));
-requireAll(require.context('./lib/utils',  false, /^\.\/.*\.(js|es6)$/));
-requireAll(require.context('./u2f',        false, /^\.\/.*\.(js|es6)$/));
-requireAll(require.context('./droplab',    false, /^\.\/.*\.(js|es6)$/));
-requireAll(require.context('.',            false, /^\.\/(?!application\.js).*\.(js|es6)$/));
+
+// behaviors
+require('./behaviors/autosize');
+require('./behaviors/details_behavior');
+require('./behaviors/quick_submit');
+require('./behaviors/requires_input');
+require('./behaviors/toggler_behavior');
+
+// blob
+require('./blob/blob_ci_yaml');
+require('./blob/blob_dockerfile_selector');
+require('./blob/blob_dockerfile_selectors');
+require('./blob/blob_file_dropzone');
+require('./blob/blob_gitignore_selector');
+require('./blob/blob_gitignore_selectors');
+require('./blob/blob_license_selector');
+require('./blob/blob_license_selectors');
+require('./blob/template_selector');
+
+// templates
+require('./templates/issuable_template_selector');
+require('./templates/issuable_template_selectors');
+
+// commit
+require('./commit/file.js');
+require('./commit/image_file.js');
+
+// extensions
+require('./extensions/array');
+require('./extensions/custom_event');
+require('./extensions/element');
+require('./extensions/jquery');
+require('./extensions/object');
+
+// lib/utils
+require('./lib/utils/animate');
+require('./lib/utils/bootstrap_linked_tabs');
+require('./lib/utils/common_utils');
+require('./lib/utils/datetime_utility');
+require('./lib/utils/notify');
+require('./lib/utils/pretty_time');
+require('./lib/utils/text_utility');
+require('./lib/utils/type_utility');
+require('./lib/utils/url_utility');
+
+// u2f
+require('./u2f/authenticate');
+require('./u2f/error');
+require('./u2f/register');
+require('./u2f/util');
+
+// droplab
+require('./droplab/droplab');
+require('./droplab/droplab_ajax');
+require('./droplab/droplab_ajax_filter');
+require('./droplab/droplab_filter');
+
+// everything else
+require('./abuse_reports');
+require('./activities');
+require('./admin');
+require('./ajax_loading_spinner');
+require('./api');
+require('./aside');
+require('./autosave');
+require('./awards_handler');
+require('./breakpoints');
+require('./broadcast_message');
+require('./build');
+require('./build_artifacts');
+require('./build_variables');
+require('./ci_lint_editor');
+require('./commit');
+require('./commits');
+require('./compare');
+require('./compare_autocomplete');
+require('./confirm_danger_modal');
+require('./copy_as_gfm');
+require('./copy_to_clipboard');
+require('./create_label');
+require('./diff');
+require('./dispatcher');
+require('./dropzone_input');
+require('./due_date_select');
+require('./files_comment_button');
+require('./flash');
+require('./gfm_auto_complete');
+require('./gl_dropdown');
+require('./gl_field_error');
+require('./gl_field_errors');
+require('./gl_form');
+require('./group_avatar');
+require('./group_label_subscription');
+require('./groups_select');
+require('./header');
+require('./importer_status');
+require('./issuable');
+require('./issuable_context');
+require('./issuable_form');
+require('./issue');
+require('./issue_status_select');
+require('./issues_bulk_assignment');
+require('./label_manager');
+require('./labels');
+require('./labels_select');
+require('./layout_nav');
+require('./line_highlighter');
+require('./logo');
+require('./member_expiration_date');
+require('./members');
+require('./merge_request');
+require('./merge_request_tabs');
+require('./merge_request_widget');
+require('./merged_buttons');
+require('./milestone');
+require('./milestone_select');
+require('./mini_pipeline_graph_dropdown');
+require('./namespace_select');
+require('./new_branch_form');
+require('./new_commit_form');
+require('./notes');
+require('./notifications_dropdown');
+require('./notifications_form');
+require('./pager');
+require('./pipelines');
+require('./preview_markdown');
+require('./project');
+require('./project_avatar');
+require('./project_find_file');
+require('./project_fork');
+require('./project_import');
+require('./project_label_subscription');
+require('./project_new');
+require('./project_select');
+require('./project_show');
+require('./project_variables');
+require('./projects_list');
+require('./render_gfm');
+require('./render_math');
+require('./right_sidebar');
+require('./search');
+require('./search_autocomplete');
+require('./shortcuts');
+require('./shortcuts_blob');
+require('./shortcuts_dashboard_navigation');
+require('./shortcuts_find_file');
+require('./shortcuts_issuable');
+require('./shortcuts_navigation');
+require('./shortcuts_network');
+require('./signin_tabs_memoizer');
+require('./single_file_diff');
+require('./smart_interval');
+require('./snippets_list');
+require('./star');
+require('./subbable_resource');
+require('./subscription');
+require('./subscription_select');
+require('./syntax_highlight');
+require('./task_list');
+require('./todos');
+require('./tree');
+require('./user');
+require('./user_tabs');
+require('./username_validator');
+require('./users_select');
+require('./version_check_image');
+require('./visibility_select');
+require('./wikis');
+require('./zen_mode');
+
 require('vendor/fuzzaldrin-plus');
 require('es6-promise').polyfill();
 
diff --git a/app/assets/javascripts/boards/components/board_card.js b/app/assets/javascripts/boards/components/board_card.js
new file mode 100644
index 00000000000..52f61d84517
--- /dev/null
+++ b/app/assets/javascripts/boards/components/board_card.js
@@ -0,0 +1,69 @@
+/* global Vue */
+require('./issue_card_inner');
+
+const Store = gl.issueBoards.BoardsStore;
+
+module.exports = {
+  name: 'BoardsIssueCard',
+  template: `
+    <li class="card"
+      :class="{ 'user-can-drag': !disabled && issue.id, 'is-disabled': disabled || !issue.id, 'is-active': issueDetailVisible }"
+      :index="index"
+      :data-issue-id="issue.id"
+      @mousedown="mouseDown"
+      @mousemove="mouseMove"
+      @mouseup="showIssue($event)">
+      <issue-card-inner
+        :list="list"
+        :issue="issue"
+        :issue-link-base="issueLinkBase"
+        :root-path="rootPath" />
+    </li>
+  `,
+  components: {
+    'issue-card-inner': gl.issueBoards.IssueCardInner,
+  },
+  props: {
+    list: Object,
+    issue: Object,
+    issueLinkBase: String,
+    disabled: Boolean,
+    index: Number,
+    rootPath: String,
+  },
+  data() {
+    return {
+      showDetail: false,
+      detailIssue: Store.detail,
+    };
+  },
+  computed: {
+    issueDetailVisible() {
+      return this.detailIssue.issue && this.detailIssue.issue.id === this.issue.id;
+    },
+  },
+  methods: {
+    mouseDown() {
+      this.showDetail = true;
+    },
+    mouseMove() {
+      this.showDetail = false;
+    },
+    showIssue(e) {
+      const targetTagName = e.target.tagName.toLowerCase();
+
+      if (targetTagName === 'a' || targetTagName === 'button') return;
+
+      if (this.showDetail) {
+        this.showDetail = false;
+
+        if (Store.detail.issue && Store.detail.issue.id === this.issue.id) {
+          Store.detail.issue = {};
+        } else {
+          Store.detail.issue = this.issue;
+          Store.detail.list = this.list;
+        }
+      }
+    },
+  },
+};
diff --git a/app/assets/javascripts/boards/components/board_card.js.es6 b/app/assets/javascripts/boards/components/board_card.js.es6
deleted file mode 100644
index 0ea66bd027c..00000000000
--- a/app/assets/javascripts/boards/components/board_card.js.es6
+++ /dev/null
@@ -1,61 +0,0 @@
-/* eslint-disable comma-dangle, space-before-function-paren, dot-notation */
-/* global Vue */
-
-require('./issue_card_inner');
-
-(() => {
-  const Store = gl.issueBoards.BoardsStore;
-
-  window.gl = window.gl || {};
-  window.gl.issueBoards = window.gl.issueBoards || {};
-
-  gl.issueBoards.BoardCard = Vue.extend({
-    template: '#js-board-list-card',
-    components: {
-      'issue-card-inner': gl.issueBoards.IssueCardInner,
-    },
-    props: {
-      list: Object,
-      issue: Object,
-      issueLinkBase: String,
-      disabled: Boolean,
-      index: Number,
-      rootPath: String,
-    },
-    data () {
-      return {
-        showDetail: false,
-        detailIssue: Store.detail
-      };
-    },
-    computed: {
-      issueDetailVisible () {
-        return this.detailIssue.issue && this.detailIssue.issue.id === this.issue.id;
-      }
-    },
-    methods: {
-      mouseDown () {
-        this.showDetail = true;
-      },
-      mouseMove() {
-        this.showDetail = false;
-      },
-      showIssue (e) {
-        const targetTagName = e.target.tagName.toLowerCase();
-
-        if (targetTagName === 'a' || targetTagName === 'button') return;
-
-        if (this.showDetail) {
-          this.showDetail = false;
-
-          if (Store.detail.issue && Store.detail.issue.id === this.issue.id) {
-            Store.detail.issue = {};
-          } else {
-            Store.detail.issue = this.issue;
-            Store.detail.list = this.list;
-          }
-        }
-      }
-    }
-  });
-})();
diff --git a/app/assets/javascripts/boards/components/board_list.js.es6 b/app/assets/javascripts/boards/components/board_list.js.es6
index 60b0a30af3f..d92047cc0f8 100644
--- a/app/assets/javascripts/boards/components/board_list.js.es6
+++ b/app/assets/javascripts/boards/components/board_list.js.es6
@@ -2,7 +2,7 @@
 /* global Vue */
 /* global Sortable */
 
-require('./board_card');
+const boardCard = require('./board_card');
 require('./board_new_issue');
 
 (() => {
@@ -14,7 +14,7 @@ require('./board_new_issue');
   gl.issueBoards.BoardList = Vue.extend({
     template: '#js-board-list-template',
     components: {
-      'board-card': gl.issueBoards.BoardCard,
+      boardCard,
       'board-new-issue': gl.issueBoards.BoardNewIssue
     },
     props: {
diff --git a/app/assets/javascripts/boards/models/list.js.es6 b/app/assets/javascripts/boards/models/list.js.es6
index 5152be56b66..8158ed4ec2c 100644
--- a/app/assets/javascripts/boards/models/list.js.es6
+++ b/app/assets/javascripts/boards/models/list.js.es6
@@ -123,14 +123,18 @@ class List {
 
       if (listFrom) {
         this.issuesSize += 1;
-        gl.boardService.moveIssue(issue.id, listFrom.id, this.id)
-          .then(() => {
-            listFrom.getIssues(false);
-          });
+        this.updateIssueLabel(issue, listFrom);
       }
     }
   }
 
+  updateIssueLabel(issue, listFrom) {
+    gl.boardService.moveIssue(issue.id, listFrom.id, this.id)
+      .then(() => {
+        listFrom.getIssues(false);
+      });
+  }
+
   findIssue (id) {
     return this.issues.filter(issue => issue.id === id)[0];
   }
diff --git a/app/assets/javascripts/boards/stores/boards_store.js.es6 b/app/assets/javascripts/boards/stores/boards_store.js.es6
index 50842ecbaaa..56436c8fdc7 100644
--- a/app/assets/javascripts/boards/stores/boards_store.js.es6
+++ b/app/assets/javascripts/boards/stores/boards_store.js.es6
@@ -92,9 +92,12 @@
       const issueLists = issue.getLists();
       const listLabels = issueLists.map(listIssue => listIssue.label);
 
-      // Add to new lists issues if it doesn't already exist
       if (!issueTo) {
+        // Add to new lists issues if it doesn't already exist
         listTo.addIssue(issue, listFrom, newIndex);
+      } else {
+        listTo.updateIssueLabel(issue, listFrom);
+        issueTo.removeLabel(listFrom.label);
       }
 
       if (listTo.type === 'done') {
diff --git a/app/assets/javascripts/dispatcher.js.es6 b/app/assets/javascripts/dispatcher.js.es6
index f55db02f0fd..0f678492d4c 100644
--- a/app/assets/javascripts/dispatcher.js.es6
+++ b/app/assets/javascripts/dispatcher.js.es6
@@ -36,6 +36,7 @@
 /* global Shortcuts */
 
 const ShortcutsBlob = require('./shortcuts_blob');
+const UserCallout = require('./user_callout');
 
 (function() {
   var Dispatcher;
@@ -108,6 +109,9 @@ const ShortcutsBlob = require('./shortcuts_blob');
         case 'projects:compare:show':
           new gl.Diff();
           break;
+        case 'projects:branches:index':
+          gl.AjaxLoadingSpinner.init();
+          break;
         case 'projects:issues:new':
         case 'projects:issues:edit':
           shortcut_handler = new ShortcutsNavigation();
@@ -274,6 +278,9 @@ const ShortcutsBlob = require('./shortcuts_blob');
         case 'ci:lints:show':
           new gl.CILintEditor();
           break;
+        case 'users:show':
+          new UserCallout();
+          break;
       }
       switch (path.first()) {
         case 'sessions':
@@ -310,6 +317,7 @@ const ShortcutsBlob = require('./shortcuts_blob');
         case 'dashboard':
         case 'root':
           shortcut_handler = new ShortcutsDashboardNavigation();
+          new UserCallout();
           break;
         case 'profiles':
           new NotificationsForm();
diff --git a/app/assets/javascripts/graphs/graphs_bundle.js b/app/assets/javascripts/graphs/graphs_bundle.js
index 086dcb34571..ea5afbd9d29 100644
--- a/app/assets/javascripts/graphs/graphs_bundle.js
+++ b/app/assets/javascripts/graphs/graphs_bundle.js
@@ -1,4 +1,4 @@
-require('./stat_graph_contributors_graph');
-require('./stat_graph_contributors_util');
-require('./stat_graph_contributors');
-require('./stat_graph');
+import ContributorsStatGraph from './stat_graph_contributors';
+
+// export to global scope
+window.ContributorsStatGraph = ContributorsStatGraph;
diff --git a/app/assets/javascripts/graphs/stat_graph.js b/app/assets/javascripts/graphs/stat_graph.js
deleted file mode 100644
index 75a53aae33c..00000000000
--- a/app/assets/javascripts/graphs/stat_graph.js
+++ /dev/null
@@ -1,18 +0,0 @@
-/* eslint-disable func-names, space-before-function-paren, wrap-iife, no-return-assign, max-len */
-(function() {
-  this.StatGraph = (function() {
-    function StatGraph() {}
-
-    StatGraph.log = {};
-
-    StatGraph.get_log = function() {
-      return this.log;
-    };
-
-    StatGraph.set_log = function(data) {
-      return this.log = data;
-    };
-
-    return StatGraph;
-  })();
-}).call(window);
diff --git a/app/assets/javascripts/graphs/stat_graph_contributors.js b/app/assets/javascripts/graphs/stat_graph_contributors.js
index bbfb467ad50..c6be4c9e8fe 100644
--- a/app/assets/javascripts/graphs/stat_graph_contributors.js
+++ b/app/assets/javascripts/graphs/stat_graph_contributors.js
@@ -1,116 +1,111 @@
-/* eslint-disable func-names, space-before-function-paren, wrap-iife, no-var, one-var, camelcase, one-var-declaration-per-line, quotes, no-param-reassign, quote-props, comma-dangle, prefer-template, max-len, no-return-assign */
-/* global ContributorsGraph */
-/* global ContributorsAuthorGraph */
-/* global ContributorsMasterGraph */
-/* global ContributorsStatGraphUtil */
-/* global d3 */
+/* eslint-disable func-names, space-before-function-paren, wrap-iife, no-var, one-var, camelcase, one-var-declaration-per-line, quotes, no-param-reassign, quote-props, comma-dangle, prefer-template, max-len, no-return-assign, no-shadow */
 
-window.d3 = require('d3');
+import d3 from 'd3';
+import { ContributorsGraph, ContributorsAuthorGraph, ContributorsMasterGraph } from './stat_graph_contributors_graph';
+import ContributorsStatGraphUtil from './stat_graph_contributors_util';
 
-(function() {
-  this.ContributorsStatGraph = (function() {
-    function ContributorsStatGraph() {}
+export default (function() {
+  function ContributorsStatGraph() {}
 
-    ContributorsStatGraph.prototype.init = function(log) {
-      var author_commits, total_commits;
-      this.parsed_log = ContributorsStatGraphUtil.parse_log(log);
-      this.set_current_field("commits");
-      total_commits = ContributorsStatGraphUtil.get_total_data(this.parsed_log, this.field);
-      author_commits = ContributorsStatGraphUtil.get_author_data(this.parsed_log, this.field);
-      this.add_master_graph(total_commits);
-      this.add_authors_graph(author_commits);
-      return this.change_date_header();
-    };
+  ContributorsStatGraph.prototype.init = function(log) {
+    var author_commits, total_commits;
+    this.parsed_log = ContributorsStatGraphUtil.parse_log(log);
+    this.set_current_field("commits");
+    total_commits = ContributorsStatGraphUtil.get_total_data(this.parsed_log, this.field);
+    author_commits = ContributorsStatGraphUtil.get_author_data(this.parsed_log, this.field);
+    this.add_master_graph(total_commits);
+    this.add_authors_graph(author_commits);
+    return this.change_date_header();
+  };
 
-    ContributorsStatGraph.prototype.add_master_graph = function(total_data) {
-      this.master_graph = new ContributorsMasterGraph(total_data);
-      return this.master_graph.draw();
-    };
+  ContributorsStatGraph.prototype.add_master_graph = function(total_data) {
+    this.master_graph = new ContributorsMasterGraph(total_data);
+    return this.master_graph.draw();
+  };
 
-    ContributorsStatGraph.prototype.add_authors_graph = function(author_data) {
-      var limited_author_data;
-      this.authors = [];
-      limited_author_data = author_data.slice(0, 100);
-      return _.each(limited_author_data, (function(_this) {
-        return function(d) {
-          var author_graph, author_header;
-          author_header = _this.create_author_header(d);
-          $(".contributors-list").append(author_header);
-          _this.authors[d.author_name] = author_graph = new ContributorsAuthorGraph(d.dates);
-          return author_graph.draw();
-        };
-      })(this));
-    };
+  ContributorsStatGraph.prototype.add_authors_graph = function(author_data) {
+    var limited_author_data;
+    this.authors = [];
+    limited_author_data = author_data.slice(0, 100);
+    return _.each(limited_author_data, (function(_this) {
+      return function(d) {
+        var author_graph, author_header;
+        author_header = _this.create_author_header(d);
+        $(".contributors-list").append(author_header);
+        _this.authors[d.author_name] = author_graph = new ContributorsAuthorGraph(d.dates);
+        return author_graph.draw();
+      };
+    })(this));
+  };
 
-    ContributorsStatGraph.prototype.format_author_commit_info = function(author) {
-      var commits;
-      commits = $('<span/>', {
-        "class": 'graph-author-commits-count'
-      });
-      commits.text(author.commits + " commits");
-      return $('<span/>').append(commits);
-    };
+  ContributorsStatGraph.prototype.format_author_commit_info = function(author) {
+    var commits;
+    commits = $('<span/>', {
+      "class": 'graph-author-commits-count'
+    });
+    commits.text(author.commits + " commits");
+    return $('<span/>').append(commits);
+  };
 
-    ContributorsStatGraph.prototype.create_author_header = function(author) {
-      var author_commit_info, author_commit_info_span, author_email, author_name, list_item;
-      list_item = $('<li/>', {
-        "class": 'person',
-        style: 'display: block;'
-      });
-      author_name = $('<h4>' + author.author_name + '</h4>');
-      author_email = $('<p class="graph-author-email">' + author.author_email + '</p>');
-      author_commit_info_span = $('<span/>', {
-        "class": 'commits'
-      });
-      author_commit_info = this.format_author_commit_info(author);
-      author_commit_info_span.html(author_commit_info);
-      list_item.append(author_name);
-      list_item.append(author_email);
-      list_item.append(author_commit_info_span);
-      return list_item;
-    };
+  ContributorsStatGraph.prototype.create_author_header = function(author) {
+    var author_commit_info, author_commit_info_span, author_email, author_name, list_item;
+    list_item = $('<li/>', {
+      "class": 'person',
+      style: 'display: block;'
+    });
+    author_name = $('<h4>' + author.author_name + '</h4>');
+    author_email = $('<p class="graph-author-email">' + author.author_email + '</p>');
+    author_commit_info_span = $('<span/>', {
+      "class": 'commits'
+    });
+    author_commit_info = this.format_author_commit_info(author);
+    author_commit_info_span.html(author_commit_info);
+    list_item.append(author_name);
+    list_item.append(author_email);
+    list_item.append(author_commit_info_span);
+    return list_item;
+  };
 
-    ContributorsStatGraph.prototype.redraw_master = function() {
-      var total_data;
-      total_data = ContributorsStatGraphUtil.get_total_data(this.parsed_log, this.field);
-      this.master_graph.set_data(total_data);
-      return this.master_graph.redraw();
-    };
+  ContributorsStatGraph.prototype.redraw_master = function() {
+    var total_data;
+    total_data = ContributorsStatGraphUtil.get_total_data(this.parsed_log, this.field);
+    this.master_graph.set_data(total_data);
+    return this.master_graph.redraw();
+  };
 
-    ContributorsStatGraph.prototype.redraw_authors = function() {
-      var author_commits, x_domain;
-      $("ol").html("");
-      x_domain = ContributorsGraph.prototype.x_domain;
-      author_commits = ContributorsStatGraphUtil.get_author_data(this.parsed_log, this.field, x_domain);
-      return _.each(author_commits, (function(_this) {
-        return function(d) {
-          _this.redraw_author_commit_info(d);
-          $(_this.authors[d.author_name].list_item).appendTo("ol");
-          _this.authors[d.author_name].set_data(d.dates);
-          return _this.authors[d.author_name].redraw();
-        };
-      })(this));
-    };
+  ContributorsStatGraph.prototype.redraw_authors = function() {
+    var author_commits, x_domain;
+    $("ol").html("");
+    x_domain = ContributorsGraph.prototype.x_domain;
+    author_commits = ContributorsStatGraphUtil.get_author_data(this.parsed_log, this.field, x_domain);
+    return _.each(author_commits, (function(_this) {
+      return function(d) {
+        _this.redraw_author_commit_info(d);
+        $(_this.authors[d.author_name].list_item).appendTo("ol");
+        _this.authors[d.author_name].set_data(d.dates);
+        return _this.authors[d.author_name].redraw();
+      };
+    })(this));
+  };
 
-    ContributorsStatGraph.prototype.set_current_field = function(field) {
-      return this.field = field;
-    };
+  ContributorsStatGraph.prototype.set_current_field = function(field) {
+    return this.field = field;
+  };
 
-    ContributorsStatGraph.prototype.change_date_header = function() {
-      var print, print_date_format, x_domain;
-      x_domain = ContributorsGraph.prototype.x_domain;
-      print_date_format = d3.time.format("%B %e %Y");
-      print = print_date_format(x_domain[0]) + " - " + print_date_format(x_domain[1]);
-      return $("#date_header").text(print);
-    };
+  ContributorsStatGraph.prototype.change_date_header = function() {
+    var print, print_date_format, x_domain;
+    x_domain = ContributorsGraph.prototype.x_domain;
+    print_date_format = d3.time.format("%B %e %Y");
+    print = print_date_format(x_domain[0]) + " - " + print_date_format(x_domain[1]);
+    return $("#date_header").text(print);
+  };
 
-    ContributorsStatGraph.prototype.redraw_author_commit_info = function(author) {
-      var author_commit_info, author_list_item;
-      author_list_item = $(this.authors[author.author_name].list_item);
-      author_commit_info = this.format_author_commit_info(author);
-      return author_list_item.find("span").html(author_commit_info);
-    };
+  ContributorsStatGraph.prototype.redraw_author_commit_info = function(author) {
+    var author_commit_info, author_list_item;
+    author_list_item = $(this.authors[author.author_name].list_item);
+    author_commit_info = this.format_author_commit_info(author);
+    return author_list_item.find("span").html(author_commit_info);
+  };
 
-    return ContributorsStatGraph;
-  })();
-}).call(window);
+  return ContributorsStatGraph;
+})();
diff --git a/app/assets/javascripts/graphs/stat_graph_contributors_graph.js b/app/assets/javascripts/graphs/stat_graph_contributors_graph.js
index 228771da4ee..521bc77db66 100644
--- a/app/assets/javascripts/graphs/stat_graph_contributors_graph.js
+++ b/app/assets/javascripts/graphs/stat_graph_contributors_graph.js
@@ -1,276 +1,272 @@
-/* eslint-disable func-names, space-before-function-paren, one-var, no-var, prefer-rest-params, max-len, no-restricted-syntax, vars-on-top, no-use-before-define, no-param-reassign, new-cap, no-underscore-dangle, wrap-iife, comma-dangle, no-return-assign, prefer-arrow-callback, quotes, prefer-template, newline-per-chained-call, no-else-return */
-/* global d3 */
-/* global ContributorsGraph */
-
-window.d3 = require('d3');
-
-(function() {
-  var bind = function(fn, me) { return function() { return fn.apply(me, arguments); }; },
-    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
-    hasProp = {}.hasOwnProperty;
-
-  this.ContributorsGraph = (function() {
-    function ContributorsGraph() {}
-
-    ContributorsGraph.prototype.MARGIN = {
-      top: 20,
-      right: 20,
-      bottom: 30,
-      left: 50
-    };
-
-    ContributorsGraph.prototype.x_domain = null;
-
-    ContributorsGraph.prototype.y_domain = null;
-
-    ContributorsGraph.prototype.dates = [];
-
-    ContributorsGraph.set_x_domain = function(data) {
-      return ContributorsGraph.prototype.x_domain = data;
-    };
-
-    ContributorsGraph.set_y_domain = function(data) {
-      return ContributorsGraph.prototype.y_domain = [
-        0, d3.max(data, function(d) {
-          return d.commits = d.commits || d.additions || d.deletions;
-        })
-      ];
-    };
-
-    ContributorsGraph.init_x_domain = function(data) {
-      return ContributorsGraph.prototype.x_domain = d3.extent(data, function(d) {
-        return d.date;
-      });
-    };
-
-    ContributorsGraph.init_y_domain = function(data) {
-      return ContributorsGraph.prototype.y_domain = [
-        0, d3.max(data, function(d) {
-          return d.commits = d.commits || d.additions || d.deletions;
-        })
-      ];
-    };
-
-    ContributorsGraph.init_domain = function(data) {
-      ContributorsGraph.init_x_domain(data);
-      return ContributorsGraph.init_y_domain(data);
-    };
-
-    ContributorsGraph.set_dates = function(data) {
-      return ContributorsGraph.prototype.dates = data;
-    };
-
-    ContributorsGraph.prototype.set_x_domain = function() {
-      return this.x.domain(this.x_domain);
-    };
-
-    ContributorsGraph.prototype.set_y_domain = function() {
-      return this.y.domain(this.y_domain);
-    };
-
-    ContributorsGraph.prototype.set_domain = function() {
-      this.set_x_domain();
-      return this.set_y_domain();
-    };
-
-    ContributorsGraph.prototype.create_scale = function(width, height) {
-      this.x = d3.time.scale().range([0, width]).clamp(true);
-      return this.y = d3.scale.linear().range([height, 0]).nice();
-    };
-
-    ContributorsGraph.prototype.draw_x_axis = function() {
-      return this.svg.append("g").attr("class", "x axis").attr("transform", "translate(0, " + this.height + ")").call(this.x_axis);
-    };
-
-    ContributorsGraph.prototype.draw_y_axis = function() {
-      return this.svg.append("g").attr("class", "y axis").call(this.y_axis);
-    };
-
-    ContributorsGraph.prototype.set_data = function(data) {
-      return this.data = data;
-    };
-
-    return ContributorsGraph;
-  })();
-
-  this.ContributorsMasterGraph = (function(superClass) {
-    extend(ContributorsMasterGraph, superClass);
-
-    function ContributorsMasterGraph(data1) {
-      this.data = data1;
-      this.update_content = bind(this.update_content, this);
-      this.width = $('.content').width() - 70;
-      this.height = 200;
-      this.x = null;
-      this.y = null;
-      this.x_axis = null;
-      this.y_axis = null;
-      this.area = null;
-      this.svg = null;
-      this.brush = null;
-      this.x_max_domain = null;
+/* eslint-disable func-names, space-before-function-paren, no-var, prefer-rest-params, max-len, no-restricted-syntax, vars-on-top, no-use-before-define, no-param-reassign, new-cap, no-underscore-dangle, wrap-iife, comma-dangle, no-return-assign, prefer-arrow-callback, quotes, prefer-template, newline-per-chained-call, no-else-return, no-shadow */
+
+import d3 from 'd3';
+
+const bind = function(fn, me) { return function() { return fn.apply(me, arguments); }; };
+const extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
+const hasProp = {}.hasOwnProperty;
+
+export const ContributorsGraph = (function() {
+  function ContributorsGraph() {}
+
+  ContributorsGraph.prototype.MARGIN = {
+    top: 20,
+    right: 20,
+    bottom: 30,
+    left: 50
+  };
+
+  ContributorsGraph.prototype.x_domain = null;
+
+  ContributorsGraph.prototype.y_domain = null;
+
+  ContributorsGraph.prototype.dates = [];
+
+  ContributorsGraph.set_x_domain = function(data) {
+    return ContributorsGraph.prototype.x_domain = data;
+  };
+
+  ContributorsGraph.set_y_domain = function(data) {
+    return ContributorsGraph.prototype.y_domain = [
+      0, d3.max(data, function(d) {
+        return d.commits = d.commits || d.additions || d.deletions;
+      })
+    ];
+  };
+
+  ContributorsGraph.init_x_domain = function(data) {
+    return ContributorsGraph.prototype.x_domain = d3.extent(data, function(d) {
+      return d.date;
+    });
+  };
+
+  ContributorsGraph.init_y_domain = function(data) {
+    return ContributorsGraph.prototype.y_domain = [
+      0, d3.max(data, function(d) {
+        return d.commits = d.commits || d.additions || d.deletions;
+      })
+    ];
+  };
+
+  ContributorsGraph.init_domain = function(data) {
+    ContributorsGraph.init_x_domain(data);
+    return ContributorsGraph.init_y_domain(data);
+  };
+
+  ContributorsGraph.set_dates = function(data) {
+    return ContributorsGraph.prototype.dates = data;
+  };
+
+  ContributorsGraph.prototype.set_x_domain = function() {
+    return this.x.domain(this.x_domain);
+  };
+
+  ContributorsGraph.prototype.set_y_domain = function() {
+    return this.y.domain(this.y_domain);
+  };
+
+  ContributorsGraph.prototype.set_domain = function() {
+    this.set_x_domain();
+    return this.set_y_domain();
+  };
+
+  ContributorsGraph.prototype.create_scale = function(width, height) {
+    this.x = d3.time.scale().range([0, width]).clamp(true);
+    return this.y = d3.scale.linear().range([height, 0]).nice();
+  };
+
+  ContributorsGraph.prototype.draw_x_axis = function() {
+    return this.svg.append("g").attr("class", "x axis").attr("transform", "translate(0, " + this.height + ")").call(this.x_axis);
+  };
+
+  ContributorsGraph.prototype.draw_y_axis = function() {
+    return this.svg.append("g").attr("class", "y axis").call(this.y_axis);
+  };
+
+  ContributorsGraph.prototype.set_data = function(data) {
+    return this.data = data;
+  };
+
+  return ContributorsGraph;
+})();
+
+export const ContributorsMasterGraph = (function(superClass) {
+  extend(ContributorsMasterGraph, superClass);
+
+  function ContributorsMasterGraph(data1) {
+    this.data = data1;
+    this.update_content = bind(this.update_content, this);
+    this.width = $('.content').width() - 70;
+    this.height = 200;
+    this.x = null;
+    this.y = null;
+    this.x_axis = null;
+    this.y_axis = null;
+    this.area = null;
+    this.svg = null;
+    this.brush = null;
+    this.x_max_domain = null;
+  }
+
+  ContributorsMasterGraph.prototype.process_dates = function(data) {
+    var dates;
+    dates = this.get_dates(data);
+    this.parse_dates(data);
+    return ContributorsGraph.set_dates(dates);
+  };
+
+  ContributorsMasterGraph.prototype.get_dates = function(data) {
+    return _.pluck(data, 'date');
+  };
+
+  ContributorsMasterGraph.prototype.parse_dates = function(data) {
+    var parseDate;
+    parseDate = d3.time.format("%Y-%m-%d").parse;
+    return data.forEach(function(d) {
+      return d.date = parseDate(d.date);
+    });
+  };
+
+  ContributorsMasterGraph.prototype.create_scale = function() {
+    return ContributorsMasterGraph.__super__.create_scale.call(this, this.width, this.height);
+  };
+
+  ContributorsMasterGraph.prototype.create_axes = function() {
+    this.x_axis = d3.svg.axis().scale(this.x).orient("bottom");
+    return this.y_axis = d3.svg.axis().scale(this.y).orient("left").ticks(5);
+  };
+
+  ContributorsMasterGraph.prototype.create_svg = function() {
+    return this.svg = d3.select("#contributors-master").append("svg").attr("width", this.width + this.MARGIN.left + this.MARGIN.right).attr("height", this.height + this.MARGIN.top + this.MARGIN.bottom).attr("class", "tint-box").append("g").attr("transform", "translate(" + this.MARGIN.left + "," + this.MARGIN.top + ")");
+  };
+
+  ContributorsMasterGraph.prototype.create_area = function(x, y) {
+    return this.area = d3.svg.area().x(function(d) {
+      return x(d.date);
+    }).y0(this.height).y1(function(d) {
+      d.commits = d.commits || d.additions || d.deletions;
+      return y(d.commits);
+    }).interpolate("basis");
+  };
+
+  ContributorsMasterGraph.prototype.create_brush = function() {
+    return this.brush = d3.svg.brush().x(this.x).on("brushend", this.update_content);
+  };
+
+  ContributorsMasterGraph.prototype.draw_path = function(data) {
+    return this.svg.append("path").datum(data).attr("class", "area").attr("d", this.area);
+  };
+
+  ContributorsMasterGraph.prototype.add_brush = function() {
+    return this.svg.append("g").attr("class", "selection").call(this.brush).selectAll("rect").attr("height", this.height);
+  };
+
+  ContributorsMasterGraph.prototype.update_content = function() {
+    ContributorsGraph.set_x_domain(this.brush.empty() ? this.x_max_domain : this.brush.extent());
+    return $("#brush_change").trigger('change');
+  };
+
+  ContributorsMasterGraph.prototype.draw = function() {
+    this.process_dates(this.data);
+    this.create_scale();
+    this.create_axes();
+    ContributorsGraph.init_domain(this.data);
+    this.x_max_domain = this.x_domain;
+    this.set_domain();
+    this.create_area(this.x, this.y);
+    this.create_svg();
+    this.create_brush();
+    this.draw_path(this.data);
+    this.draw_x_axis();
+    this.draw_y_axis();
+    return this.add_brush();
+  };
+
+  ContributorsMasterGraph.prototype.redraw = function() {
+    this.process_dates(this.data);
+    ContributorsGraph.set_y_domain(this.data);
+    this.set_y_domain();
+    this.svg.select("path").datum(this.data);
+    this.svg.select("path").attr("d", this.area);
+    return this.svg.select(".y.axis").call(this.y_axis);
+  };
+
+  return ContributorsMasterGraph;
+})(ContributorsGraph);
+
+export const ContributorsAuthorGraph = (function(superClass) {
+  extend(ContributorsAuthorGraph, superClass);
+
+  function ContributorsAuthorGraph(data1) {
+    this.data = data1;
+    // Don't split graph size in half for mobile devices.
+    if ($(window).width() < 768) {
+      this.width = $('.content').width() - 80;
+    } else {
+      this.width = ($('.content').width() / 2) - 100;
     }
-
-    ContributorsMasterGraph.prototype.process_dates = function(data) {
-      var dates;
-      dates = this.get_dates(data);
-      this.parse_dates(data);
-      return ContributorsGraph.set_dates(dates);
-    };
-
-    ContributorsMasterGraph.prototype.get_dates = function(data) {
-      return _.pluck(data, 'date');
-    };
-
-    ContributorsMasterGraph.prototype.parse_dates = function(data) {
+    this.height = 200;
+    this.x = null;
+    this.y = null;
+    this.x_axis = null;
+    this.y_axis = null;
+    this.area = null;
+    this.svg = null;
+    this.list_item = null;
+  }
+
+  ContributorsAuthorGraph.prototype.create_scale = function() {
+    return ContributorsAuthorGraph.__super__.create_scale.call(this, this.width, this.height);
+  };
+
+  ContributorsAuthorGraph.prototype.create_axes = function() {
+    this.x_axis = d3.svg.axis().scale(this.x).orient("bottom").ticks(8);
+    return this.y_axis = d3.svg.axis().scale(this.y).orient("left").ticks(5);
+  };
+
+  ContributorsAuthorGraph.prototype.create_area = function(x, y) {
+    return this.area = d3.svg.area().x(function(d) {
       var parseDate;
       parseDate = d3.time.format("%Y-%m-%d").parse;
-      return data.forEach(function(d) {
-        return d.date = parseDate(d.date);
-      });
-    };
-
-    ContributorsMasterGraph.prototype.create_scale = function() {
-      return ContributorsMasterGraph.__super__.create_scale.call(this, this.width, this.height);
-    };
-
-    ContributorsMasterGraph.prototype.create_axes = function() {
-      this.x_axis = d3.svg.axis().scale(this.x).orient("bottom");
-      return this.y_axis = d3.svg.axis().scale(this.y).orient("left").ticks(5);
-    };
-
-    ContributorsMasterGraph.prototype.create_svg = function() {
-      return this.svg = d3.select("#contributors-master").append("svg").attr("width", this.width + this.MARGIN.left + this.MARGIN.right).attr("height", this.height + this.MARGIN.top + this.MARGIN.bottom).attr("class", "tint-box").append("g").attr("transform", "translate(" + this.MARGIN.left + "," + this.MARGIN.top + ")");
-    };
-
-    ContributorsMasterGraph.prototype.create_area = function(x, y) {
-      return this.area = d3.svg.area().x(function(d) {
-        return x(d.date);
-      }).y0(this.height).y1(function(d) {
-        d.commits = d.commits || d.additions || d.deletions;
-        return y(d.commits);
-      }).interpolate("basis");
-    };
-
-    ContributorsMasterGraph.prototype.create_brush = function() {
-      return this.brush = d3.svg.brush().x(this.x).on("brushend", this.update_content);
-    };
-
-    ContributorsMasterGraph.prototype.draw_path = function(data) {
-      return this.svg.append("path").datum(data).attr("class", "area").attr("d", this.area);
-    };
-
-    ContributorsMasterGraph.prototype.add_brush = function() {
-      return this.svg.append("g").attr("class", "selection").call(this.brush).selectAll("rect").attr("height", this.height);
-    };
-
-    ContributorsMasterGraph.prototype.update_content = function() {
-      ContributorsGraph.set_x_domain(this.brush.empty() ? this.x_max_domain : this.brush.extent());
-      return $("#brush_change").trigger('change');
-    };
-
-    ContributorsMasterGraph.prototype.draw = function() {
-      this.process_dates(this.data);
-      this.create_scale();
-      this.create_axes();
-      ContributorsGraph.init_domain(this.data);
-      this.x_max_domain = this.x_domain;
-      this.set_domain();
-      this.create_area(this.x, this.y);
-      this.create_svg();
-      this.create_brush();
-      this.draw_path(this.data);
-      this.draw_x_axis();
-      this.draw_y_axis();
-      return this.add_brush();
-    };
-
-    ContributorsMasterGraph.prototype.redraw = function() {
-      this.process_dates(this.data);
-      ContributorsGraph.set_y_domain(this.data);
-      this.set_y_domain();
-      this.svg.select("path").datum(this.data);
-      this.svg.select("path").attr("d", this.area);
-      return this.svg.select(".y.axis").call(this.y_axis);
-    };
-
-    return ContributorsMasterGraph;
-  })(ContributorsGraph);
-
-  this.ContributorsAuthorGraph = (function(superClass) {
-    extend(ContributorsAuthorGraph, superClass);
-
-    function ContributorsAuthorGraph(data1) {
-      this.data = data1;
-      // Don't split graph size in half for mobile devices.
-      if ($(window).width() < 768) {
-        this.width = $('.content').width() - 80;
-      } else {
-        this.width = ($('.content').width() / 2) - 100;
-      }
-      this.height = 200;
-      this.x = null;
-      this.y = null;
-      this.x_axis = null;
-      this.y_axis = null;
-      this.area = null;
-      this.svg = null;
-      this.list_item = null;
-    }
-
-    ContributorsAuthorGraph.prototype.create_scale = function() {
-      return ContributorsAuthorGraph.__super__.create_scale.call(this, this.width, this.height);
-    };
-
-    ContributorsAuthorGraph.prototype.create_axes = function() {
-      this.x_axis = d3.svg.axis().scale(this.x).orient("bottom").ticks(8);
-      return this.y_axis = d3.svg.axis().scale(this.y).orient("left").ticks(5);
-    };
-
-    ContributorsAuthorGraph.prototype.create_area = function(x, y) {
-      return this.area = d3.svg.area().x(function(d) {
-        var parseDate;
-        parseDate = d3.time.format("%Y-%m-%d").parse;
-        return x(parseDate(d));
-      }).y0(this.height).y1((function(_this) {
-        return function(d) {
-          if (_this.data[d] != null) {
-            return y(_this.data[d]);
-          } else {
-            return y(0);
-          }
-        };
-      })(this)).interpolate("basis");
-    };
-
-    ContributorsAuthorGraph.prototype.create_svg = function() {
-      this.list_item = d3.selectAll(".person")[0].pop();
-      return this.svg = d3.select(this.list_item).append("svg").attr("width", this.width + this.MARGIN.left + this.MARGIN.right).attr("height", this.height + this.MARGIN.top + this.MARGIN.bottom).attr("class", "spark").append("g").attr("transform", "translate(" + this.MARGIN.left + "," + this.MARGIN.top + ")");
-    };
-
-    ContributorsAuthorGraph.prototype.draw_path = function(data) {
-      return this.svg.append("path").datum(data).attr("class", "area-contributor").attr("d", this.area);
-    };
-
-    ContributorsAuthorGraph.prototype.draw = function() {
-      this.create_scale();
-      this.create_axes();
-      this.set_domain();
-      this.create_area(this.x, this.y);
-      this.create_svg();
-      this.draw_path(this.dates);
-      this.draw_x_axis();
-      return this.draw_y_axis();
-    };
-
-    ContributorsAuthorGraph.prototype.redraw = function() {
-      this.set_domain();
-      this.svg.select("path").datum(this.dates);
-      this.svg.select("path").attr("d", this.area);
-      this.svg.select(".x.axis").call(this.x_axis);
-      return this.svg.select(".y.axis").call(this.y_axis);
-    };
-
-    return ContributorsAuthorGraph;
-  })(ContributorsGraph);
-}).call(window);
+      return x(parseDate(d));
+    }).y0(this.height).y1((function(_this) {
+      return function(d) {
+        if (_this.data[d] != null) {
+          return y(_this.data[d]);
+        } else {
+          return y(0);
+        }
+      };
+    })(this)).interpolate("basis");
+  };
+
+  ContributorsAuthorGraph.prototype.create_svg = function() {
+    this.list_item = d3.selectAll(".person")[0].pop();
+    return this.svg = d3.select(this.list_item).append("svg").attr("width", this.width + this.MARGIN.left + this.MARGIN.right).attr("height", this.height + this.MARGIN.top + this.MARGIN.bottom).attr("class", "spark").append("g").attr("transform", "translate(" + this.MARGIN.left + "," + this.MARGIN.top + ")");
+  };
+
+  ContributorsAuthorGraph.prototype.draw_path = function(data) {
+    return this.svg.append("path").datum(data).attr("class", "area-contributor").attr("d", this.area);
+  };
+
+  ContributorsAuthorGraph.prototype.draw = function() {
+    this.create_scale();
+    this.create_axes();
+    this.set_domain();
+    this.create_area(this.x, this.y);
+    this.create_svg();
+    this.draw_path(this.dates);
+    this.draw_x_axis();
+    return this.draw_y_axis();
+  };
+
+  ContributorsAuthorGraph.prototype.redraw = function() {
+    this.set_domain();
+    this.svg.select("path").datum(this.dates);
+    this.svg.select("path").attr("d", this.area);
+    this.svg.select(".x.axis").call(this.x_axis);
+    return this.svg.select(".y.axis").call(this.y_axis);
+  };
+
+  return ContributorsAuthorGraph;
+})(ContributorsGraph);
diff --git a/app/assets/javascripts/graphs/stat_graph_contributors_util.js b/app/assets/javascripts/graphs/stat_graph_contributors_util.js
index 7954c583598..c583757f3f2 100644
--- a/app/assets/javascripts/graphs/stat_graph_contributors_util.js
+++ b/app/assets/javascripts/graphs/stat_graph_contributors_util.js
@@ -1,138 +1,137 @@
 /* eslint-disable func-names, space-before-function-paren, object-shorthand, no-var, one-var, camelcase, one-var-declaration-per-line, comma-dangle, no-param-reassign, no-return-assign, quotes, prefer-arrow-callback, wrap-iife, consistent-return, no-unused-vars, max-len, no-cond-assign, no-else-return, max-len */
-(function() {
-  window.ContributorsStatGraphUtil = {
-    parse_log: function(log) {
-      var by_author, by_email, data, entry, i, len, total, normalized_email;
-      total = {};
-      by_author = {};
-      by_email = {};
-      for (i = 0, len = log.length; i < len; i += 1) {
-        entry = log[i];
-        if (total[entry.date] == null) {
-          this.add_date(entry.date, total);
-        }
-        normalized_email = entry.author_email.toLowerCase();
-        data = by_author[entry.author_name] || by_email[normalized_email];
-        if (data == null) {
-          data = this.add_author(entry, by_author, by_email);
-        }
-        if (!data[entry.date]) {
-          this.add_date(entry.date, data);
-        }
-        this.store_data(entry, total[entry.date], data[entry.date]);
-      }
-      total = _.toArray(total);
-      by_author = _.toArray(by_author);
-      return {
-        total: total,
-        by_author: by_author
-      };
-    },
-    add_date: function(date, collection) {
-      collection[date] = {};
-      return collection[date].date = date;
-    },
-    add_author: function(author, by_author, by_email) {
-      var data, normalized_email;
-      data = {};
-      data.author_name = author.author_name;
-      data.author_email = author.author_email;
-      normalized_email = author.author_email.toLowerCase();
-      by_author[author.author_name] = data;
-      by_email[normalized_email] = data;
-      return data;
-    },
-    store_data: function(entry, total, by_author) {
-      this.store_commits(total, by_author);
-      this.store_additions(entry, total, by_author);
-      return this.store_deletions(entry, total, by_author);
-    },
-    store_commits: function(total, by_author) {
-      this.add(total, "commits", 1);
-      return this.add(by_author, "commits", 1);
-    },
-    add: function(collection, field, value) {
-      if (collection[field] == null) {
-        collection[field] = 0;
-      }
-      return collection[field] += value;
-    },
-    store_additions: function(entry, total, by_author) {
-      if (entry.additions == null) {
-        entry.additions = 0;
+
+export default {
+  parse_log: function(log) {
+    var by_author, by_email, data, entry, i, len, total, normalized_email;
+    total = {};
+    by_author = {};
+    by_email = {};
+    for (i = 0, len = log.length; i < len; i += 1) {
+      entry = log[i];
+      if (total[entry.date] == null) {
+        this.add_date(entry.date, total);
       }
-      this.add(total, "additions", entry.additions);
-      return this.add(by_author, "additions", entry.additions);
-    },
-    store_deletions: function(entry, total, by_author) {
-      if (entry.deletions == null) {
-        entry.deletions = 0;
+      normalized_email = entry.author_email.toLowerCase();
+      data = by_author[entry.author_name] || by_email[normalized_email];
+      if (data == null) {
+        data = this.add_author(entry, by_author, by_email);
       }
-      this.add(total, "deletions", entry.deletions);
-      return this.add(by_author, "deletions", entry.deletions);
-    },
-    get_total_data: function(parsed_log, field) {
-      var log, total_data;
-      log = parsed_log.total;
-      total_data = this.pick_field(log, field);
-      return _.sortBy(total_data, function(d) {
-        return d.date;
-      });
-    },
-    pick_field: function(log, field) {
-      var total_data;
-      total_data = [];
-      _.each(log, function(d) {
-        return total_data.push(_.pick(d, [field, 'date']));
-      });
-      return total_data;
-    },
-    get_author_data: function(parsed_log, field, date_range) {
-      var author_data, log;
-      if (date_range == null) {
-        date_range = null;
-      }
-      log = parsed_log.by_author;
-      author_data = [];
-      _.each(log, (function(_this) {
-        return function(log_entry) {
-          var parsed_log_entry;
-          parsed_log_entry = _this.parse_log_entry(log_entry, field, date_range);
-          if (!_.isEmpty(parsed_log_entry.dates)) {
-            return author_data.push(parsed_log_entry);
-          }
-        };
-      })(this));
-      return _.sortBy(author_data, function(d) {
-        return d[field];
-      }).reverse();
-    },
-    parse_log_entry: function(log_entry, field, date_range) {
-      var parsed_entry;
-      parsed_entry = {};
-      parsed_entry.author_name = log_entry.author_name;
-      parsed_entry.author_email = log_entry.author_email;
-      parsed_entry.dates = {};
-      parsed_entry.commits = parsed_entry.additions = parsed_entry.deletions = 0;
-      _.each(_.omit(log_entry, 'author_name', 'author_email'), (function(_this) {
-        return function(value, key) {
-          if (_this.in_range(value.date, date_range)) {
-            parsed_entry.dates[value.date] = value[field];
-            parsed_entry.commits += value.commits;
-            parsed_entry.additions += value.additions;
-            return parsed_entry.deletions += value.deletions;
-          }
-        };
-      })(this));
-      return parsed_entry;
-    },
-    in_range: function(date, date_range) {
-      var ref;
-      if (date_range === null || (date_range[0] <= (ref = new Date(date)) && ref <= date_range[1])) {
-        return true;
-      } else {
-        return false;
+      if (!data[entry.date]) {
+        this.add_date(entry.date, data);
       }
+      this.store_data(entry, total[entry.date], data[entry.date]);
+    }
+    total = _.toArray(total);
+    by_author = _.toArray(by_author);
+    return {
+      total: total,
+      by_author: by_author
+    };
+  },
+  add_date: function(date, collection) {
+    collection[date] = {};
+    return collection[date].date = date;
+  },
+  add_author: function(author, by_author, by_email) {
+    var data, normalized_email;
+    data = {};
+    data.author_name = author.author_name;
+    data.author_email = author.author_email;
+    normalized_email = author.author_email.toLowerCase();
+    by_author[author.author_name] = data;
+    by_email[normalized_email] = data;
+    return data;
+  },
+  store_data: function(entry, total, by_author) {
+    this.store_commits(total, by_author);
+    this.store_additions(entry, total, by_author);
+    return this.store_deletions(entry, total, by_author);
+  },
+  store_commits: function(total, by_author) {
+    this.add(total, "commits", 1);
+    return this.add(by_author, "commits", 1);
+  },
+  add: function(collection, field, value) {
+    if (collection[field] == null) {
+      collection[field] = 0;
+    }
+    return collection[field] += value;
+  },
+  store_additions: function(entry, total, by_author) {
+    if (entry.additions == null) {
+      entry.additions = 0;
+    }
+    this.add(total, "additions", entry.additions);
+    return this.add(by_author, "additions", entry.additions);
+  },
+  store_deletions: function(entry, total, by_author) {
+    if (entry.deletions == null) {
+      entry.deletions = 0;
+    }
+    this.add(total, "deletions", entry.deletions);
+    return this.add(by_author, "deletions", entry.deletions);
+  },
+  get_total_data: function(parsed_log, field) {
+    var log, total_data;
+    log = parsed_log.total;
+    total_data = this.pick_field(log, field);
+    return _.sortBy(total_data, function(d) {
+      return d.date;
+    });
+  },
+  pick_field: function(log, field) {
+    var total_data;
+    total_data = [];
+    _.each(log, function(d) {
+      return total_data.push(_.pick(d, [field, 'date']));
+    });
+    return total_data;
+  },
+  get_author_data: function(parsed_log, field, date_range) {
+    var author_data, log;
+    if (date_range == null) {
+      date_range = null;
+    }
+    log = parsed_log.by_author;
+    author_data = [];
+    _.each(log, (function(_this) {
+      return function(log_entry) {
+        var parsed_log_entry;
+        parsed_log_entry = _this.parse_log_entry(log_entry, field, date_range);
+        if (!_.isEmpty(parsed_log_entry.dates)) {
+          return author_data.push(parsed_log_entry);
+        }
+      };
+    })(this));
+    return _.sortBy(author_data, function(d) {
+      return d[field];
+    }).reverse();
+  },
+  parse_log_entry: function(log_entry, field, date_range) {
+    var parsed_entry;
+    parsed_entry = {};
+    parsed_entry.author_name = log_entry.author_name;
+    parsed_entry.author_email = log_entry.author_email;
+    parsed_entry.dates = {};
+    parsed_entry.commits = parsed_entry.additions = parsed_entry.deletions = 0;
+    _.each(_.omit(log_entry, 'author_name', 'author_email'), (function(_this) {
+      return function(value, key) {
+        if (_this.in_range(value.date, date_range)) {
+          parsed_entry.dates[value.date] = value[field];
+          parsed_entry.commits += value.commits;
+          parsed_entry.additions += value.additions;
+          return parsed_entry.deletions += value.deletions;
+        }
+      };
+    })(this));
+    return parsed_entry;
+  },
+  in_range: function(date, date_range) {
+    var ref;
+    if (date_range === null || (date_range[0] <= (ref = new Date(date)) && ref <= date_range[1])) {
+      return true;
+    } else {
+      return false;
     }
-  };
-}).call(window);
+  }
+};
diff --git a/app/assets/javascripts/lib/utils/common_utils.js.es6 b/app/assets/javascripts/lib/utils/common_utils.js.es6
index 45a1d90a9d9..dbf40ec7fcf 100644
--- a/app/assets/javascripts/lib/utils/common_utils.js.es6
+++ b/app/assets/javascripts/lib/utils/common_utils.js.es6
@@ -296,5 +296,57 @@
      * @returns {Boolean}
      */
     w.gl.utils.convertPermissionToBoolean = permission => permission === 'true';
+
+    /**
+     * Back Off exponential algorithm
+     * backOff :: (Function<next, stop>, Number) -> Promise<Any, Error>
+     *
+     * @param {Function<next, stop>} fn function to be called
+     * @param {Number} timeout
+     * @return {Promise<Any, Error>}
+     * @example
+     * ```
+     *  backOff(function (next, stop) {
+     *    // Let's perform this function repeatedly for 60s or for the timeout provided.
+     *
+     *    ourFunction()
+     *      .then(function (result) {
+     *        // continue if result is not what we need
+     *        next();
+     *
+     *        // when result is what we need let's stop with the repetions and jump out of the cycle
+     *        stop(result);
+     *      })
+     *      .catch(function (error) {
+     *        // if there is an error, we need to stop this with an error.
+     *        stop(error);
+     *      })
+     *  }, 60000)
+     *  .then(function (result) {})
+     *  .catch(function (error) {
+     *    // deal with errors passed to stop()
+     *  })
+     * ```
+     */
+    w.gl.utils.backOff = (fn, timeout = 60000) => {
+      let nextInterval = 2000;
+
+      const startTime = (+new Date());
+
+      return new Promise((resolve, reject) => {
+        const stop = arg => ((arg instanceof Error) ? reject(arg) : resolve(arg));
+
+        const next = () => {
+          if (new Date().getTime() - startTime < timeout) {
+            setTimeout(fn.bind(null, next, stop), nextInterval);
+            nextInterval *= 2;
+          } else {
+            reject(new Error('BACKOFF_TIMEOUT'));
+          }
+        };
+
+        fn(next, stop);
+      });
+    };
   })(window);
 }).call(window);
diff --git a/app/assets/javascripts/milestone.js b/app/assets/javascripts/milestone.js
index 7fbaeec7882..38c673e8907 100644
--- a/app/assets/javascripts/milestone.js
+++ b/app/assets/javascripts/milestone.js
@@ -78,7 +78,6 @@
       } else {
         $(element).find('.assignee-icon').empty();
       }
-      return $(element).effect('highlight');
     };
 
     function Milestone() {
diff --git a/app/assets/javascripts/milestone_select.js b/app/assets/javascripts/milestone_select.js
index 8df1c8e7f94..51fa5c828b3 100644
--- a/app/assets/javascripts/milestone_select.js
+++ b/app/assets/javascripts/milestone_select.js
@@ -39,7 +39,7 @@
         $value = $block.find('.value');
         $loading = $block.find('.block-loading').fadeOut();
         if (issueUpdateURL) {
-          milestoneLinkTemplate = _.template('<a href="/<%- namespace %>/<%- path %>/milestones/<%- iid %>" class="bold has-tooltip" data-container="body" title="<%- remaining %>"><%- title %></a>');
+          milestoneLinkTemplate = _.template('<a href="/<%- full_path %>/milestones/<%- iid %>" class="bold has-tooltip" data-container="body" title="<%- remaining %>"><%- title %></a>');
           milestoneLinkNoneTemplate = '<span class="no-value">None</span>';
           collapsedSidebarLabelTemplate = _.template('<span class="has-tooltip" data-container="body" title="<%- remaining %>" data-placement="left"> <%- title %> </span>');
         }
@@ -181,8 +181,7 @@
                 $selectbox.hide();
                 $value.css('display', '');
                 if (data.milestone != null) {
-                  data.milestone.namespace = _this.currentProject.namespace;
-                  data.milestone.path = _this.currentProject.path;
+                  data.milestone.full_path = _this.currentProject.full_path;
                   data.milestone.remaining = gl.utils.timeFor(data.milestone.due_date);
                   $value.html(milestoneLinkTemplate(data.milestone));
                   return $sidebarCollapsedValue.find('span').html(collapsedSidebarLabelTemplate(data.milestone));
diff --git a/app/assets/javascripts/new_branch_form.js b/app/assets/javascripts/new_branch_form.js
index cb24f212c66..3f678b93f73 100644
--- a/app/assets/javascripts/new_branch_form.js
+++ b/app/assets/javascripts/new_branch_form.js
@@ -1,4 +1,4 @@
-/* eslint-disable func-names, space-before-function-paren, no-var, one-var, prefer-rest-params, max-len, vars-on-top, wrap-iife, consistent-return, comma-dangle, one-var-declaration-per-line, quotes, no-return-assign, prefer-arrow-callback, prefer-template, no-shadow, no-else-return, max-len */
+/* eslint-disable func-names, space-before-function-paren, no-var, one-var, prefer-rest-params, max-len, vars-on-top, wrap-iife, consistent-return, comma-dangle, one-var-declaration-per-line, quotes, no-return-assign, prefer-arrow-callback, prefer-template, no-shadow, no-else-return, max-len, object-shorthand */
 (function() {
   var bind = function(fn, me) { return function() { return fn.apply(me, arguments); }; },
     indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i += 1) { if (i in this && this[i] === item) return i; } return -1; };
@@ -20,15 +20,35 @@
     };
 
     NewBranchForm.prototype.init = function() {
-      if (this.name.val().length > 0) {
+      if (this.name.length && this.name.val().length > 0) {
         return this.name.trigger('blur');
       }
     };
 
     NewBranchForm.prototype.setupAvailableRefs = function(availableRefs) {
-      return this.ref.autocomplete({
-        source: availableRefs,
-        minLength: 1
+      var $branchSelect = $('.js-branch-select');
+
+      $branchSelect.glDropdown({
+        data: availableRefs,
+        filterable: true,
+        filterByText: true,
+        remote: false,
+        fieldName: $branchSelect.data('field-name'),
+        selectable: true,
+        isSelectable: function(branch, $el) {
+          return !$el.hasClass('is-active');
+        },
+        text: function(branch) {
+          return branch;
+        },
+        id: function(branch) {
+          return branch;
+        },
+        toggleLabel: function(branch) {
+          if (branch) {
+            return branch;
+          }
+        }
       });
     };
 
diff --git a/app/assets/javascripts/profile/profile_bundle.js b/app/assets/javascripts/profile/profile_bundle.js
index d7f3c9fd37e..15d32825583 100644
--- a/app/assets/javascripts/profile/profile_bundle.js
+++ b/app/assets/javascripts/profile/profile_bundle.js
@@ -1,3 +1,2 @@
-// require everything else in this directory
-function requireAll(context) { return context.keys().map(context); }
-requireAll(require.context('.', false, /^\.\/(?!profile_bundle).*\.(js|es6)$/));
+require('./gl_crop');
+require('./profile');
diff --git a/app/assets/javascripts/protected_branches/protected_branch_edit.js.es6 b/app/assets/javascripts/protected_branches/protected_branch_edit.js.es6
index 149e511451e..6ef59e94384 100644
--- a/app/assets/javascripts/protected_branches/protected_branch_edit.js.es6
+++ b/app/assets/javascripts/protected_branches/protected_branch_edit.js.es6
@@ -36,6 +36,9 @@
       // Do not update if one dropdown has not selected any option
       if (!($allowedToMergeInput.length && $allowedToPushInput.length)) return;
 
+      this.$allowedToMergeDropdown.disable();
+      this.$allowedToPushDropdown.disable();
+
       $.ajax({
         type: 'POST',
         url: this.$wrap.data('url'),
@@ -53,13 +56,13 @@
             }]
           }
         },
-        success: () => {
-          this.$wrap.effect('highlight');
-        },
         error() {
           $.scrollTo(0);
           new Flash('Failed to update branch!');
         }
+      }).always(() => {
+        this.$allowedToMergeDropdown.enable();
+        this.$allowedToPushDropdown.enable();
       });
     }
   };
diff --git a/app/assets/javascripts/protected_branches/protected_branches_bundle.js b/app/assets/javascripts/protected_branches/protected_branches_bundle.js
index ffb66caf5f4..849c1e31623 100644
--- a/app/assets/javascripts/protected_branches/protected_branches_bundle.js
+++ b/app/assets/javascripts/protected_branches/protected_branches_bundle.js
@@ -1,3 +1,5 @@
-// require everything else in this directory
-function requireAll(context) { return context.keys().map(context); }
-requireAll(require.context('.', false, /^\.\/(?!protected_branches_bundle).*\.(js|es6)$/));
+require('./protected_branch_access_dropdown');
+require('./protected_branch_create');
+require('./protected_branch_dropdown');
+require('./protected_branch_edit');
+require('./protected_branch_edit_list');
diff --git a/app/assets/javascripts/snippet/snippet_bundle.js b/app/assets/javascripts/snippet/snippet_bundle.js
index 89822246bb8..a98403f4cf2 100644
--- a/app/assets/javascripts/snippet/snippet_bundle.js
+++ b/app/assets/javascripts/snippet/snippet_bundle.js
@@ -1,10 +1,6 @@
 /* eslint-disable func-names, space-before-function-paren, prefer-arrow-callback, no-var, quotes, max-len */
 /* global ace */
 
-// require everything else in this directory
-function requireAll(context) { return context.keys().map(context); }
-requireAll(require.context('.', false, /^\.\/(?!snippet_bundle).*\.(js|es6)$/));
-
 (function() {
   $(function() {
     var editor = ace.edit("editor");
diff --git a/app/assets/javascripts/user_callout.js b/app/assets/javascripts/user_callout.js
new file mode 100644
index 00000000000..74b869502a4
--- /dev/null
+++ b/app/assets/javascripts/user_callout.js
@@ -0,0 +1,58 @@
+/* global Cookies */
+
+const userCalloutElementName = '.user-callout';
+const closeButton = '.close-user-callout';
+const userCalloutBtn = '.user-callout-btn';
+const userCalloutSvgAttrName = 'callout-svg';
+
+const USER_CALLOUT_COOKIE = 'user_callout_dismissed';
+
+const USER_CALLOUT_TEMPLATE = `
+  <div class="bordered-box landing content-block">
+    <button class="btn btn-default close close-user-callout" type="button">
+      <i class="fa fa-times dismiss-icon"></i>
+    </button>
+    <div class="row">
+      <div class="col-sm-3 col-xs-12 svg-container">
+      </div>
+      <div class="col-sm-8 col-xs-12 inner-content">
+        <h4>
+          Customize your experience
+        </h4>
+        <p>
+          Change syntax themes, default project pages, and more in preferences.
+        </p>
+        <a class="btn user-callout-btn" href="/profile/preferences">Check it out</a>
+      </div>
+  </div>
+</div>`;
+
+class UserCallout {
+  constructor() {
+    this.isCalloutDismissed = Cookies.get(USER_CALLOUT_COOKIE);
+    this.userCalloutBody = $(userCalloutElementName);
+    this.userCalloutSvg = $(userCalloutElementName).attr(userCalloutSvgAttrName);
+    $(userCalloutElementName).removeAttr(userCalloutSvgAttrName);
+    this.init();
+  }
+
+  init() {
+    const $template = $(USER_CALLOUT_TEMPLATE);
+    if (!this.isCalloutDismissed || this.isCalloutDismissed === 'false') {
+      $template.find('.svg-container').append(this.userCalloutSvg);
+      this.userCalloutBody.append($template);
+      $template.find(closeButton).on('click', e => this.dismissCallout(e));
+      $template.find(userCalloutBtn).on('click', e => this.dismissCallout(e));
+    }
+  }
+
+  dismissCallout(e) {
+    Cookies.set(USER_CALLOUT_COOKIE, 'true');
+    const $currentTarget = $(e.currentTarget);
+    if ($currentTarget.hasClass('close-user-callout')) {
+      this.userCalloutBody.empty();
+    }
+  }
+}
+
+module.exports = UserCallout;
diff --git a/app/assets/javascripts/users/users_bundle.js b/app/assets/javascripts/users/users_bundle.js
index 4cad60a59b1..580e2d84be5 100644
--- a/app/assets/javascripts/users/users_bundle.js
+++ b/app/assets/javascripts/users/users_bundle.js
@@ -1,3 +1 @@
-// require everything else in this directory
-function requireAll(context) { return context.keys().map(context); }
-requireAll(require.context('.', false, /^\.\/(?!users_bundle).*\.(js|es6)$/));
+require('./calendar');
diff --git a/app/assets/javascripts/vue_pipelines_index/pipeline_actions.js.es6 b/app/assets/javascripts/vue_pipelines_index/pipeline_actions.js.es6
index 04029c47668..e20085d1fd2 100644
--- a/app/assets/javascripts/vue_pipelines_index/pipeline_actions.js.es6
+++ b/app/assets/javascripts/vue_pipelines_index/pipeline_actions.js.es6
@@ -1,5 +1,5 @@
 /* global Vue, Flash, gl */
-/* eslint-disable no-param-reassign */
+/* eslint-disable no-param-reassign, no-alert */
 
 ((gl) => {
   gl.VuePipelineActions = Vue.extend({
@@ -16,6 +16,20 @@
       download(name) {
         return `Download ${name} artifacts`;
       },
+
+      /**
+       * Shows a dialog when the user clicks in the cancel button.
+       * We need to prevent the default behavior and stop propagation because the
+       * link relies on UJS.
+       *
+       * @param  {Event} event
+       */
+      confirmAction(event) {
+        if (!confirm('Are you sure you want to cancel this pipeline?')) {
+          event.preventDefault();
+          event.stopPropagation();
+        }
+      },
     },
     template: `
       <td class="pipeline-actions hidden-xs">
diff --git a/app/assets/javascripts/vue_pipelines_index/pipelines.js.es6 b/app/assets/javascripts/vue_pipelines_index/pipelines.js.es6
index 0265c00a414..9d66d28cc62 100644
--- a/app/assets/javascripts/vue_pipelines_index/pipelines.js.es6
+++ b/app/assets/javascripts/vue_pipelines_index/pipelines.js.es6
@@ -23,7 +23,7 @@ const CommitPipelinesStoreWithTimeAgo = require('../commit/pipelines/pipelines_s
         apiScope: 'all',
         pageInfo: {},
         pagenum: 1,
-        count: { all: 0, running_or_pending: 0 },
+        count: {},
         pageRequest: false,
       };
     },
diff --git a/app/assets/javascripts/vue_pipelines_index/stage.js.es6 b/app/assets/javascripts/vue_pipelines_index/stage.js.es6
index 8cc417a9966..67fdd729e41 100644
--- a/app/assets/javascripts/vue_pipelines_index/stage.js.es6
+++ b/app/assets/javascripts/vue_pipelines_index/stage.js.es6
@@ -23,6 +23,13 @@
         required: true,
       },
     },
+
+    updated() {
+      if (this.builds) {
+        this.stopDropdownClickPropagation();
+      }
+    },
+
     methods: {
       fetchBuilds(e) {
         const areaExpanded = e.currentTarget.attributes['aria-expanded'];
@@ -37,17 +44,19 @@
             return flash;
           });
       },
-      keepGraph(e) {
-        const { target } = e;
-
-        if (target.className.indexOf('js-ci-action-icon') >= 0) return null;
-
-        if (
-          target.parentElement &&
-          (target.parentElement.className.indexOf('js-ci-action-icon') >= 0)
-        ) return null;
 
-        return e.stopPropagation();
+      /**
+       * When the user right clicks or cmd/ctrl + click in the job name
+       * the dropdown should not be closed and the link should open in another tab,
+       * so we stop propagation of the click event inside the dropdown.
+       *
+       * Since this component is rendered multiple times per page we need to guarantee we only
+       * target the click event of this component.
+       */
+      stopDropdownClickPropagation() {
+        $(this.$el.querySelectorAll('.js-builds-dropdown-list a.mini-pipeline-graph-dropdown-item')).on('click', (e) => {
+          e.stopPropagation();
+        });
       },
     },
     computed: {
@@ -76,13 +85,13 @@
     template: `
       <div>
         <button
-          @click='fetchBuilds($event)'
+          @click="fetchBuilds($event)"
           :class="triggerButtonClass"
-          :title='stage.title'
+          :title="stage.title"
           data-placement="top"
           data-toggle="dropdown"
           type="button"
-          :aria-label='stage.title'
+          :aria-label="stage.title"
         >
           <span v-html="svg" aria-hidden="true"></span>
           <i class="fa fa-caret-down" aria-hidden="true"></i>
@@ -90,7 +99,6 @@
         <ul class="dropdown-menu mini-pipeline-graph-dropdown-menu js-builds-dropdown-container">
           <div class="arrow-up" aria-hidden="true"></div>
           <div
-            @click='keepGraph($event)'
             :class="dropdownClass"
             class="js-builds-dropdown-list scrollable-menu"
             v-html="buildsOrSpinner"
diff --git a/app/assets/stylesheets/application.scss b/app/assets/stylesheets/application.scss
index 1dcd1f8a6fc..83a8eeaafde 100644
--- a/app/assets/stylesheets/application.scss
+++ b/app/assets/stylesheets/application.scss
@@ -2,7 +2,6 @@
  * This is a manifest file that'll automatically include all the stylesheets available in this directory
  * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at
  * the top of the compiled file, but it's generally better to create a new file per style scope.
- *= require jquery-ui/autocomplete
  *= require jquery.atwho
  *= require select2
  *= require_self
diff --git a/app/assets/stylesheets/framework/jquery.scss b/app/assets/stylesheets/framework/jquery.scss
index d335fedefe2..300ba4f2de6 100644
--- a/app/assets/stylesheets/framework/jquery.scss
+++ b/app/assets/stylesheets/framework/jquery.scss
@@ -2,17 +2,6 @@
   font-family: $regular_font;
   font-size: $font-size-base;
 
-  &.ui-autocomplete {
-    border-color: $jq-ui-border;
-    padding: 0;
-    margin-top: 2px;
-    z-index: 1001;
-
-    .ui-menu-item a {
-      padding: 4px 10px;
-    }
-  }
-
   .ui-state-default {
     border: 1px solid $white-light;
     background: $white-light;
diff --git a/app/assets/stylesheets/framework/sidebar.scss b/app/assets/stylesheets/framework/sidebar.scss
index 040a7ce0c16..8978e284f55 100644
--- a/app/assets/stylesheets/framework/sidebar.scss
+++ b/app/assets/stylesheets/framework/sidebar.scss
@@ -29,16 +29,14 @@
   }
 }
 
-@media (min-width: $screen-sm-min) {
-  .content-wrapper {
-    padding-right: $gutter_collapsed_width;
-  }
-}
-
 .right-sidebar-collapsed {
   padding-right: 0;
 
   @media (min-width: $screen-sm-min) {
+    .content-wrapper {
+      padding-right: $gutter_collapsed_width;
+    }
+
     .merge-request-tabs-holder.affix {
       right: $gutter_collapsed_width;
     }
@@ -56,6 +54,12 @@
 .right-sidebar-expanded {
   padding-right: 0;
 
+  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
+    .content-wrapper {
+      padding-right: $gutter_collapsed_width;
+    }
+  }
+
   @media (min-width: $screen-md-min) {
     .content-wrapper {
       padding-right: $gutter_width;
diff --git a/app/assets/stylesheets/pages/profile.scss b/app/assets/stylesheets/pages/profile.scss
index 8031c4467a4..aad1a8986b0 100644
--- a/app/assets/stylesheets/pages/profile.scss
+++ b/app/assets/stylesheets/pages/profile.scss
@@ -277,3 +277,41 @@ table.u2f-registrations {
     padding-left: 18px;
   }
 }
+
+.user-callout {
+  margin: 24px auto 0;
+
+  .bordered-box {
+    border: 1px solid $border-color;
+    border-radius: $border-radius-default;
+  }
+
+  .landing {
+    margin-bottom: $gl-padding;
+
+    .close {
+      margin-right: 20px;
+    }
+
+    .dismiss-icon {
+      float: right;
+      cursor: pointer;
+      color: $cycle-analytics-dismiss-icon-color;
+    }
+
+    .svg-container {
+      text-align: center;
+
+      svg {
+        width: 136px;
+        height: 136px;
+      }
+    }
+  }
+
+  @media(max-width: $screen-xs-max) {
+    .inner-content {
+      padding-left: 30px;
+    }
+  }
+}
diff --git a/app/controllers/admin/application_settings_controller.rb b/app/controllers/admin/application_settings_controller.rb
index b0f5d4a9933..d807e6263ee 100644
--- a/app/controllers/admin/application_settings_controller.rb
+++ b/app/controllers/admin/application_settings_controller.rb
@@ -83,6 +83,7 @@ class Admin::ApplicationSettingsController < Admin::ApplicationController
       :akismet_api_key,
       :akismet_enabled,
       :container_registry_token_expire_delay,
+      :default_artifacts_expire_in,
       :default_branch_protection,
       :default_group_visibility,
       :default_project_visibility,
diff --git a/app/controllers/admin/system_info_controller.rb b/app/controllers/admin/system_info_controller.rb
index 1330399a836..99039724521 100644
--- a/app/controllers/admin/system_info_controller.rb
+++ b/app/controllers/admin/system_info_controller.rb
@@ -3,7 +3,7 @@ class Admin::SystemInfoController < Admin::ApplicationController
     'nobrowse',
     'read-only',
     'ro'
-  ]
+  ].freeze
 
   EXCLUDED_MOUNT_TYPES = [
     'autofs',
@@ -27,7 +27,7 @@ class Admin::SystemInfoController < Admin::ApplicationController
     'tmpfs',
     'tracefs',
     'vfat'
-  ]
+  ].freeze
 
   def show
     @cpus = Vmstat.cpu rescue nil
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 5e7af3bff0d..e42e48f87d2 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -181,7 +181,7 @@ class ApplicationController < ActionController::Base
   end
 
   def gitlab_ldap_access(&block)
-    Gitlab::LDAP::Access.open { |access| block.call(access) }
+    Gitlab::LDAP::Access.open { |access| yield(access) }
   end
 
   # JSON for infinite scroll via Pager object
diff --git a/app/controllers/concerns/creates_commit.rb b/app/controllers/concerns/creates_commit.rb
index 88d180fcc2e..2fe03020d2d 100644
--- a/app/controllers/concerns/creates_commit.rb
+++ b/app/controllers/concerns/creates_commit.rb
@@ -101,13 +101,14 @@ module CreatesCommit
 
   # TODO: We should really clean this up
   def set_commit_variables
-    if can?(current_user, :push_code, @project)
-      # Edit file in this project
-      @mr_source_project = @project
-    else
-      # Merge request from fork to this project
-      @mr_source_project = current_user.fork_of(@project)
-    end
+    @mr_source_project =
+      if can?(current_user, :push_code, @project)
+        # Edit file in this project
+        @project
+      else
+        # Merge request from fork to this project
+        current_user.fork_of(@project)
+      end
 
     # Merge request to this project
     @mr_target_project = @project
diff --git a/app/controllers/concerns/service_params.rb b/app/controllers/concerns/service_params.rb
index d7f5a4e4682..e610ccaec96 100644
--- a/app/controllers/concerns/service_params.rb
+++ b/app/controllers/concerns/service_params.rb
@@ -59,10 +59,10 @@ module ServiceParams
     :user_key,
     :username,
     :webhook
-  ]
+  ].freeze
 
   # Parameters to ignore if no value is specified
-  FILTER_BLANK_PARAMS = [:password]
+  FILTER_BLANK_PARAMS = [:password].freeze
 
   def service_params
     dynamic_params = @service.event_channel_names + @service.event_names
diff --git a/app/controllers/concerns/spammable_actions.rb b/app/controllers/concerns/spammable_actions.rb
index da225d8f1c7..d0a692070d9 100644
--- a/app/controllers/concerns/spammable_actions.rb
+++ b/app/controllers/concerns/spammable_actions.rb
@@ -27,7 +27,7 @@ module SpammableActions
 
       render :verify
     else
-      fallback.call
+      yield
     end
   end
 
diff --git a/app/controllers/jwt_controller.rb b/app/controllers/jwt_controller.rb
index c2e4d62b50b..3109439b2ff 100644
--- a/app/controllers/jwt_controller.rb
+++ b/app/controllers/jwt_controller.rb
@@ -5,7 +5,7 @@ class JwtController < ApplicationController
 
   SERVICES = {
     Auth::ContainerRegistryAuthenticationService::AUDIENCE => Auth::ContainerRegistryAuthenticationService,
-  }
+  }.freeze
 
   def auth
     service = SERVICES[params[:service]]
@@ -39,7 +39,8 @@ class JwtController < ApplicationController
           message: "HTTP Basic: Access denied\n" \
                    "You have 2FA enabled, please use a personal access token for Git over HTTP.\n" \
                    "You can generate one at #{profile_personal_access_tokens_url}" }
-      ] }, status: 401
+      ]
+    }, status: 401
   end
 
   def render_unauthorized
@@ -47,7 +48,8 @@ class JwtController < ApplicationController
       errors: [
         { code: 'UNAUTHORIZED',
           message: 'HTTP Basic: Access denied' }
-      ] }, status: 401
+      ]
+    }, status: 401
   end
 
   def auth_params
diff --git a/app/controllers/profiles/two_factor_auths_controller.rb b/app/controllers/profiles/two_factor_auths_controller.rb
index 18044ca78e2..26e7e93533e 100644
--- a/app/controllers/profiles/two_factor_auths_controller.rb
+++ b/app/controllers/profiles/two_factor_auths_controller.rb
@@ -80,7 +80,7 @@ class Profiles::TwoFactorAuthsController < Profiles::ApplicationController
 
   def build_qr_code
     uri = current_user.otp_provisioning_uri(account_string, issuer: issuer_host)
-    RQRCode::render_qrcode(uri, :svg, level: :m, unit: 3)
+    RQRCode.render_qrcode(uri, :svg, level: :m, unit: 3)
   end
 
   def account_string
diff --git a/app/controllers/projects/branches_controller.rb b/app/controllers/projects/branches_controller.rb
index 89d84809e3a..a01c0caa959 100644
--- a/app/controllers/projects/branches_controller.rb
+++ b/app/controllers/projects/branches_controller.rb
@@ -1,8 +1,9 @@
 class Projects::BranchesController < Projects::ApplicationController
   include ActionView::Helpers::SanitizeHelper
   include SortingHelper
+
   # Authorize
-  before_action :require_non_empty_project
+  before_action :require_non_empty_project, except: :create
   before_action :authorize_download_code!
   before_action :authorize_push_code!, only: [:new, :create, :destroy, :destroy_all_merged]
 
@@ -32,6 +33,8 @@ class Projects::BranchesController < Projects::ApplicationController
     branch_name = sanitize(strip_tags(params[:branch_name]))
     branch_name = Addressable::URI.unescape(branch_name)
 
+    redirect_to_autodeploy = project.empty_repo? && project.deployment_services.present?
+
     result = CreateBranchService.new(project, current_user).
         execute(branch_name, ref)
 
@@ -42,8 +45,15 @@ class Projects::BranchesController < Projects::ApplicationController
 
     if result[:status] == :success
       @branch = result[:branch]
-      redirect_to namespace_project_tree_path(@project.namespace, @project,
-                                              @branch.name)
+
+      if redirect_to_autodeploy
+        redirect_to(
+          url_to_autodeploy_setup(project, branch_name),
+          notice: view_context.autodeploy_flash_notice(branch_name))
+      else
+        redirect_to namespace_project_tree_path(@project.namespace, @project,
+                                                @branch.name)
+      end
     else
       @error = result[:message]
       render action: 'new'
@@ -76,7 +86,19 @@ class Projects::BranchesController < Projects::ApplicationController
       ref_escaped = sanitize(strip_tags(params[:ref]))
       Addressable::URI.unescape(ref_escaped)
     else
-      @project.default_branch
+      @project.default_branch || 'master'
     end
   end
+
+  def url_to_autodeploy_setup(project, branch_name)
+    namespace_project_new_blob_path(
+      project.namespace,
+      project,
+      branch_name,
+      file_name: '.gitlab-ci.yml',
+      commit_message: 'Set up auto deploy',
+      target_branch: branch_name,
+      context: 'autodeploy'
+    )
+  end
 end
diff --git a/app/controllers/projects/git_http_client_controller.rb b/app/controllers/projects/git_http_client_controller.rb
index 216c158e41e..9a1bf037a95 100644
--- a/app/controllers/projects/git_http_client_controller.rb
+++ b/app/controllers/projects/git_http_client_controller.rb
@@ -76,11 +76,12 @@ class Projects::GitHttpClientController < Projects::ApplicationController
     return @project if defined?(@project)
 
     project_id, _ = project_id_with_suffix
-    if project_id.blank?
-      @project = nil
-    else
-      @project = Project.find_by_full_path("#{params[:namespace_id]}/#{project_id}")
-    end
+    @project =
+      if project_id.blank?
+        nil
+      else
+        Project.find_by_full_path("#{params[:namespace_id]}/#{project_id}")
+      end
   end
 
   # This method returns two values so that we can parse
diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb
index 365c49a20d4..d122c7fdcb2 100644
--- a/app/controllers/projects/merge_requests_controller.rb
+++ b/app/controllers/projects/merge_requests_controller.rb
@@ -381,14 +381,15 @@ class Projects::MergeRequestsController < Projects::ApplicationController
   end
 
   def merge_widget_refresh
-    if merge_request.merge_when_build_succeeds
-      @status = :merge_when_build_succeeds
-    else
-      # Only MRs that can be merged end in this action
-      # MR can be already picked up for merge / merged already or can be waiting for worker to be picked up
-      # in last case it does not have any special status. Possible error is handled inside widget js function
-      @status = :success
-    end
+    @status =
+      if merge_request.merge_when_build_succeeds
+        :merge_when_build_succeeds
+      else
+        # Only MRs that can be merged end in this action
+        # MR can be already picked up for merge / merged already or can be waiting for worker to be picked up
+        # in last case it does not have any special status. Possible error is handled inside widget js function
+        :success
+      end
 
     render 'merge'
   end
diff --git a/app/controllers/projects/pipelines_controller.rb b/app/controllers/projects/pipelines_controller.rb
index 84451257b98..8657bc4dfdc 100644
--- a/app/controllers/projects/pipelines_controller.rb
+++ b/app/controllers/projects/pipelines_controller.rb
@@ -13,9 +13,15 @@ class Projects::PipelinesController < Projects::ApplicationController
       .page(params[:page])
       .per(30)
 
-    @running_or_pending_count = PipelinesFinder
+    @running_count = PipelinesFinder
       .new(project).execute(scope: 'running').count
 
+    @pending_count = PipelinesFinder
+      .new(project).execute(scope: 'pending').count
+
+    @finished_count = PipelinesFinder
+      .new(project).execute(scope: 'finished').count
+
     @pipelines_count = PipelinesFinder
       .new(project).execute.count
 
@@ -29,7 +35,9 @@ class Projects::PipelinesController < Projects::ApplicationController
             .represent(@pipelines),
           count: {
             all: @pipelines_count,
-            running_or_pending: @running_or_pending_count
+            running: @running_count,
+            pending: @pending_count,
+            finished: @finished_count,
           }
         }
       end
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 93a180b9036..7d81c96262f 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -15,11 +15,12 @@ class SessionsController < Devise::SessionsController
 
   def new
     set_minimum_password_length
-    if Gitlab.config.ldap.enabled
-      @ldap_servers = Gitlab::LDAP::Config.servers
-    else
-      @ldap_servers = []
-    end
+    @ldap_servers =
+      if Gitlab.config.ldap.enabled
+        Gitlab::LDAP::Config.servers
+      else
+        []
+      end
 
     super
   end
diff --git a/app/controllers/snippets_controller.rb b/app/controllers/snippets_controller.rb
index 2d26718873f..f3fd3da8b20 100644
--- a/app/controllers/snippets_controller.rb
+++ b/app/controllers/snippets_controller.rb
@@ -28,8 +28,9 @@ class SnippetsController < ApplicationController
       @snippets = SnippetsFinder.new.execute(current_user, {
         filter: :by_user,
         user: @user,
-        scope: params[:scope] }).
-      page(params[:page])
+        scope: params[:scope]
+      })
+      .page(params[:page])
 
       render 'index'
     else
diff --git a/app/finders/issuable_finder.rb b/app/finders/issuable_finder.rb
index 206c92fe82a..f49301e2631 100644
--- a/app/finders/issuable_finder.rb
+++ b/app/finders/issuable_finder.rb
@@ -19,7 +19,7 @@
 #     iids: integer[]
 #
 class IssuableFinder
-  NONE = '0'
+  NONE = '0'.freeze
 
   attr_accessor :current_user, :params
 
diff --git a/app/finders/notes_finder.rb b/app/finders/notes_finder.rb
index 4bd8c83081a..6630c6384f2 100644
--- a/app/finders/notes_finder.rb
+++ b/app/finders/notes_finder.rb
@@ -28,11 +28,12 @@ class NotesFinder
   private
 
   def init_collection
-    if @params[:target_id]
-      @notes = on_target(@params[:target_type], @params[:target_id])
-    else
-      @notes = notes_of_any_type
-    end
+    @notes =
+      if @params[:target_id]
+        on_target(@params[:target_type], @params[:target_id])
+      else
+        notes_of_any_type
+      end
   end
 
   def notes_of_any_type
diff --git a/app/finders/pipelines_finder.rb b/app/finders/pipelines_finder.rb
index 32aea75486d..a9172f6767f 100644
--- a/app/finders/pipelines_finder.rb
+++ b/app/finders/pipelines_finder.rb
@@ -10,7 +10,11 @@ class PipelinesFinder
     scoped_pipelines =
       case scope
       when 'running'
-        pipelines.running_or_pending
+        pipelines.running
+      when 'pending'
+        pipelines.pending
+      when 'finished'
+        pipelines.finished
       when 'branches'
         from_ids(ids_for_ref(branches))
       when 'tags'
diff --git a/app/finders/todos_finder.rb b/app/finders/todos_finder.rb
index a93a63bdb9b..b7f091f334d 100644
--- a/app/finders/todos_finder.rb
+++ b/app/finders/todos_finder.rb
@@ -13,7 +13,7 @@
 #
 
 class TodosFinder
-  NONE = '0'
+  NONE = '0'.freeze
 
   attr_accessor :current_user, :params
 
@@ -99,7 +99,7 @@ class TodosFinder
   end
 
   def type?
-    type.present? && ['Issue', 'MergeRequest'].include?(type)
+    type.present? && %w(Issue MergeRequest).include?(type)
   end
 
   def type
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 6db813d4a02..70419eb4bde 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -69,11 +69,12 @@ module ApplicationHelper
   end
 
   def avatar_icon(user_or_email = nil, size = nil, scale = 2)
-    if user_or_email.is_a?(User)
-      user = user_or_email
-    else
-      user = User.find_by_any_email(user_or_email.try(:downcase))
-    end
+    user =
+      if user_or_email.is_a?(User)
+        user_or_email
+      else
+        User.find_by_any_email(user_or_email.try(:downcase))
+      end
 
     if user
       user.avatar_url(size) || default_avatar
diff --git a/app/helpers/application_settings_helper.rb b/app/helpers/application_settings_helper.rb
index 60485160495..4b025669f69 100644
--- a/app/helpers/application_settings_helper.rb
+++ b/app/helpers/application_settings_helper.rb
@@ -1,28 +1,15 @@
 module ApplicationSettingsHelper
-  def gravatar_enabled?
-    current_application_settings.gravatar_enabled?
-  end
-
-  def signup_enabled?
-    current_application_settings.signup_enabled?
-  end
-
-  def signin_enabled?
-    current_application_settings.signin_enabled?
-  end
+  delegate  :gravatar_enabled?,
+            :signup_enabled?,
+            :signin_enabled?,
+            :akismet_enabled?,
+            :koding_enabled?,
+            to: :current_application_settings
 
   def user_oauth_applications?
     current_application_settings.user_oauth_applications
   end
 
-  def askimet_enabled?
-    current_application_settings.akismet_enabled?
-  end
-
-  def koding_enabled?
-    current_application_settings.koding_enabled?
-  end
-
   def allowed_protocols_present?
     current_application_settings.enabled_git_access_protocol.present?
   end
diff --git a/app/helpers/blob_helper.rb b/app/helpers/blob_helper.rb
index 311a70725ab..7f32c1b5300 100644
--- a/app/helpers/blob_helper.rb
+++ b/app/helpers/blob_helper.rb
@@ -153,16 +153,17 @@ module BlobHelper
     # Because we are opionated we set the cache headers ourselves.
     response.cache_control[:public] = @project.public?
 
-    if @ref && @commit && @ref == @commit.id
-      # This is a link to a commit by its commit SHA. That means that the blob
-      # is immutable. The only reason to invalidate the cache is if the commit
-      # was deleted or if the user lost access to the repository.
-      response.cache_control[:max_age] = Blob::CACHE_TIME_IMMUTABLE
-    else
-      # A branch or tag points at this blob. That means that the expected blob
-      # value may change over time.
-      response.cache_control[:max_age] = Blob::CACHE_TIME
-    end
+    response.cache_control[:max_age] =
+      if @ref && @commit && @ref == @commit.id
+        # This is a link to a commit by its commit SHA. That means that the blob
+        # is immutable. The only reason to invalidate the cache is if the commit
+        # was deleted or if the user lost access to the repository.
+        Blob::CACHE_TIME_IMMUTABLE
+      else
+        # A branch or tag points at this blob. That means that the expected blob
+        # value may change over time.
+        Blob::CACHE_TIME
+      end
 
     response.etag = @blob.id
     !stale
diff --git a/app/helpers/button_helper.rb b/app/helpers/button_helper.rb
index 4c7c16d694c..195094730aa 100644
--- a/app/helpers/button_helper.rb
+++ b/app/helpers/button_helper.rb
@@ -34,7 +34,7 @@ module ButtonHelper
 
     content_tag (append_link ? :a : :span), protocol,
       class: klass,
-      href: (project.http_url_to_repo if append_link),
+      href: (project.http_url_to_repo(current_user) if append_link),
       data: {
         html: true,
         placement: placement,
diff --git a/app/helpers/emails_helper.rb b/app/helpers/emails_helper.rb
index a6d9e37ac76..f927cfc998f 100644
--- a/app/helpers/emails_helper.rb
+++ b/app/helpers/emails_helper.rb
@@ -24,7 +24,7 @@ module EmailsHelper
 
   def action_title(url)
     return unless url
-    ["merge_requests", "issues", "commit"].each do |action|
+    %w(merge_requests issues commit).each do |action|
       if url.split("/").include?(action)
         return "View #{action.humanize.singularize}"
       end
diff --git a/app/helpers/issuables_helper.rb b/app/helpers/issuables_helper.rb
index 03354c235eb..860a665ae26 100644
--- a/app/helpers/issuables_helper.rb
+++ b/app/helpers/issuables_helper.rb
@@ -23,7 +23,7 @@ module IssuablesHelper
   def issuable_json_path(issuable)
     project = issuable.project
 
-    if issuable.kind_of?(MergeRequest)
+    if issuable.is_a?(MergeRequest)
       namespace_project_merge_request_path(project.namespace, project, issuable.iid, :json)
     else
       namespace_project_issue_path(project.namespace, project, issuable.iid, :json)
@@ -52,7 +52,7 @@ module IssuablesHelper
         field_name: 'issuable_template',
         selected: selected_template(issuable),
         project_path: ref_project.path,
-        namespace_path: ref_project.namespace.path
+        namespace_path: ref_project.namespace.full_path
       }
     }
 
@@ -198,7 +198,7 @@ module IssuablesHelper
     @counts[issuable_type][state]
   end
 
-  IRRELEVANT_PARAMS_FOR_CACHE_KEY = %i[utf8 sort page]
+  IRRELEVANT_PARAMS_FOR_CACHE_KEY = %i[utf8 sort page].freeze
   private_constant :IRRELEVANT_PARAMS_FOR_CACHE_KEY
 
   def issuables_state_counter_cache_key(issuable_type, state)
diff --git a/app/helpers/javascript_helper.rb b/app/helpers/javascript_helper.rb
index 320dd89c9d3..68c09c922a6 100644
--- a/app/helpers/javascript_helper.rb
+++ b/app/helpers/javascript_helper.rb
@@ -2,6 +2,7 @@ module JavascriptHelper
   def page_specific_javascript_tag(js)
     javascript_include_tag asset_path(js)
   end
+
   def page_specific_javascript_bundle_tag(js)
     javascript_include_tag(*webpack_asset_paths(js))
   end
diff --git a/app/helpers/namespaces_helper.rb b/app/helpers/namespaces_helper.rb
index dc5ae8edbb2..2e3a15bc1b9 100644
--- a/app/helpers/namespaces_helper.rb
+++ b/app/helpers/namespaces_helper.rb
@@ -33,7 +33,7 @@ module NamespacesHelper
   end
 
   def namespace_icon(namespace, size = 40)
-    if namespace.kind_of?(Group)
+    if namespace.is_a?(Group)
       group_icon(namespace)
     else
       avatar_icon(namespace.owner.email, size)
diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index eb98204285d..4befeacc135 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -150,6 +150,15 @@ module ProjectsHelper
     ).html_safe
   end
 
+  def link_to_autodeploy_doc
+    link_to 'About auto deploy', help_page_path('ci/autodeploy/index'), target: '_blank'
+  end
+
+  def autodeploy_flash_notice(branch_name)
+    "Branch <strong>#{truncate(sanitize(branch_name))}</strong> was created. To set up auto deploy, \
+      choose a GitLab CI Yaml template and commit your changes. #{link_to_autodeploy_doc}".html_safe
+  end
+
   private
 
   def repo_children_classes(field)
@@ -232,7 +241,7 @@ module ProjectsHelper
     when 'ssh'
       project.ssh_url_to_repo
     else
-      project.http_url_to_repo
+      project.http_url_to_repo(current_user)
     end
   end
 
diff --git a/app/helpers/sorting_helper.rb b/app/helpers/sorting_helper.rb
index ff787fb4131..8ad3851fb9a 100644
--- a/app/helpers/sorting_helper.rb
+++ b/app/helpers/sorting_helper.rb
@@ -30,7 +30,7 @@ module SortingHelper
     }
 
     if current_controller?('admin/projects')
-      options.merge!(sort_value_largest_repo => sort_title_largest_repo)
+      options[sort_value_largest_repo] = sort_title_largest_repo
     end
 
     options
diff --git a/app/helpers/submodule_helper.rb b/app/helpers/submodule_helper.rb
index 9a748aaaf33..fb95f2b565e 100644
--- a/app/helpers/submodule_helper.rb
+++ b/app/helpers/submodule_helper.rb
@@ -37,8 +37,8 @@ module SubmoduleHelper
   end
 
   def self_url?(url, namespace, project)
-    return true if url == [ Gitlab.config.gitlab.url, '/', namespace, '/',
-                            project, '.git' ].join('')
+    return true if url == [Gitlab.config.gitlab.url, '/', namespace, '/',
+                           project, '.git'].join('')
     url == gitlab_shell.url_to_repo([namespace, '/', project].join(''))
   end
 
@@ -48,8 +48,8 @@ module SubmoduleHelper
   end
 
   def standard_links(host, namespace, project, commit)
-    base = [ 'https://', host, '/', namespace, '/', project ].join('')
-    [base, [ base, '/tree/', commit ].join('')]
+    base = ['https://', host, '/', namespace, '/', project].join('')
+    [base, [base, '/tree/', commit].join('')]
   end
 
   def relative_self_links(url, commit)
diff --git a/app/helpers/tab_helper.rb b/app/helpers/tab_helper.rb
index 547f6258909..1a55ee05996 100644
--- a/app/helpers/tab_helper.rb
+++ b/app/helpers/tab_helper.rb
@@ -99,7 +99,7 @@ module TabHelper
       return 'active'
     end
 
-    if ['services', 'hooks', 'deploy_keys', 'protected_branches'].include? controller.controller_name
+    if %w(services hooks deploy_keys protected_branches).include? controller.controller_name
       "active"
     end
   end
diff --git a/app/helpers/todos_helper.rb b/app/helpers/todos_helper.rb
index c52afd6db1c..7f8efb0a4ac 100644
--- a/app/helpers/todos_helper.rb
+++ b/app/helpers/todos_helper.rb
@@ -150,6 +150,6 @@ module TodosHelper
   private
 
   def show_todo_state?(todo)
-    (todo.target.is_a?(MergeRequest) || todo.target.is_a?(Issue)) && ['closed', 'merged'].include?(todo.target.state)
+    (todo.target.is_a?(MergeRequest) || todo.target.is_a?(Issue)) && %w(closed merged).include?(todo.target.state)
   end
 end
diff --git a/app/helpers/visibility_level_helper.rb b/app/helpers/visibility_level_helper.rb
index fc93acfe63e..169cedeb796 100644
--- a/app/helpers/visibility_level_helper.rb
+++ b/app/helpers/visibility_level_helper.rb
@@ -89,13 +89,9 @@ module VisibilityLevelHelper
     current_application_settings.restricted_visibility_levels || []
   end
 
-  def default_project_visibility
-    current_application_settings.default_project_visibility
-  end
-
-  def default_group_visibility
-    current_application_settings.default_group_visibility
-  end
+  delegate  :default_project_visibility,
+            :default_group_visibility,
+            to: :current_application_settings
 
   def skip_level?(form_model, level)
     form_model.is_a?(Project) && !form_model.visibility_level_allowed?(level)
diff --git a/app/mailers/repository_check_mailer.rb b/app/mailers/repository_check_mailer.rb
index 21db2fe04a0..22a9f5da646 100644
--- a/app/mailers/repository_check_mailer.rb
+++ b/app/mailers/repository_check_mailer.rb
@@ -1,10 +1,11 @@
 class RepositoryCheckMailer < BaseMailer
   def notify(failed_count)
-    if failed_count == 1
-      @message = "One project failed its last repository check"
-    else
-      @message = "#{failed_count} projects failed their last repository check"
-    end
+    @message =
+      if failed_count == 1
+        "One project failed its last repository check"
+      else
+        "#{failed_count} projects failed their last repository check"
+      end
 
     mail(
       to: User.admins.pluck(:email),
diff --git a/app/models/application_setting.rb b/app/models/application_setting.rb
index 74b358d8c40..dc36c754438 100644
--- a/app/models/application_setting.rb
+++ b/app/models/application_setting.rb
@@ -5,7 +5,7 @@ class ApplicationSetting < ActiveRecord::Base
   add_authentication_token_field :runners_registration_token
   add_authentication_token_field :health_check_access_token
 
-  CACHE_KEY = 'application_setting.last'
+  CACHE_KEY = 'application_setting.last'.freeze
   DOMAIN_LIST_SEPARATOR = %r{\s*[,;]\s*     # comma or semicolon, optionally surrounded by whitespace
                             |               # or
                             \s              # any whitespace character
@@ -76,6 +76,12 @@ class ApplicationSetting < ActiveRecord::Base
             presence: true,
             numericality: { only_integer: true, greater_than: 0 }
 
+  validates :max_artifacts_size,
+            presence: true,
+            numericality: { only_integer: true, greater_than: 0 }
+
+  validates :default_artifacts_expire_in, presence: true, duration: true
+
   validates :container_registry_token_expire_delay,
             presence: true,
             numericality: { only_integer: true, greater_than: 0 }
@@ -168,6 +174,7 @@ class ApplicationSetting < ActiveRecord::Base
       after_sign_up_text: nil,
       akismet_enabled: false,
       container_registry_token_expire_delay: 5,
+      default_artifacts_expire_in: '30 days',
       default_branch_protection: Settings.gitlab['default_branch_protection'],
       default_project_visibility: Settings.gitlab.default_projects_features['visibility_level'],
       default_projects_limit: Settings.gitlab['default_projects_limit'],
@@ -201,9 +208,9 @@ class ApplicationSetting < ActiveRecord::Base
       sign_in_text: nil,
       signin_enabled: Settings.gitlab['signin_enabled'],
       signup_enabled: Settings.gitlab['signup_enabled'],
+      terminal_max_session_time: 0,
       two_factor_grace_period: 48,
-      user_default_external: false,
-      terminal_max_session_time: 0
+      user_default_external: false
     }
   end
 
@@ -215,6 +222,14 @@ class ApplicationSetting < ActiveRecord::Base
     create(defaults)
   end
 
+  def self.human_attribute_name(attr, _options = {})
+    if attr == :default_artifacts_expire_in
+      'Default artifacts expiration'
+    else
+      super
+    end
+  end
+
   def home_page_url_column_exist
     ActiveRecord::Base.connection.column_exists?(:application_settings, :home_page_url)
   end
diff --git a/app/models/ci/build.rb b/app/models/ci/build.rb
index e018f8e7c4e..77aba91f65c 100644
--- a/app/models/ci/build.rb
+++ b/app/models/ci/build.rb
@@ -22,8 +22,10 @@ module Ci
     serialize :options
     serialize :yaml_variables, Gitlab::Serializer::Ci::Variables
 
+    delegate :name, to: :project, prefix: true
+
     validates :coverage, numericality: true, allow_blank: true
-    validates_presence_of :ref
+    validates :ref, presence: true
 
     scope :unstarted, ->() { where(runner_id: nil) }
     scope :ignore_failures, ->() { where(allow_failure: false) }
@@ -233,10 +235,6 @@ module Ci
       gl_project_id
     end
 
-    def project_name
-      project.name
-    end
-
     def repo_url
       auth = "gitlab-ci-token:#{ensure_token!}@"
       project.http_url_to_repo.sub(/^https?:\/\//) do |prefix|
@@ -257,7 +255,7 @@ module Ci
       return unless regex
 
       matches = text.scan(Regexp.new(regex)).last
-      matches = matches.last if matches.kind_of?(Array)
+      matches = matches.last if matches.is_a?(Array)
       coverage = matches.gsub(/\d+(\.\d+)?/).first
 
       if coverage.present?
@@ -486,7 +484,7 @@ module Ci
     def artifacts_expire_in=(value)
       self.artifacts_expire_at =
         if value
-          Time.now + ChronicDuration.parse(value)
+          ChronicDuration.parse(value)&.seconds&.from_now
         end
     end
 
diff --git a/app/models/ci/pipeline.rb b/app/models/ci/pipeline.rb
index dc4590a9923..80e11a5b58f 100644
--- a/app/models/ci/pipeline.rb
+++ b/app/models/ci/pipeline.rb
@@ -14,9 +14,11 @@ module Ci
     has_many :builds, foreign_key: :commit_id
     has_many :trigger_requests, dependent: :destroy, foreign_key: :commit_id
 
-    validates_presence_of :sha, unless: :importing?
-    validates_presence_of :ref, unless: :importing?
-    validates_presence_of :status, unless: :importing?
+    delegate :id, to: :project, prefix: true
+
+    validates :sha, presence: { unless: :importing? }
+    validates :ref, presence: { unless: :importing? }
+    validates :status, presence: { unless: :importing? }
     validate :valid_commit_sha, unless: :importing?
 
     after_create :keep_around_commits, unless: :importing?
@@ -93,8 +95,11 @@ module Ci
         .select("max(#{quoted_table_name}.id)")
         .group(:ref, :sha)
 
-      relation = ref ? where(ref: ref) : self
-      relation.where(id: max_id)
+      if ref
+        where(ref: ref, id: max_id.where(ref: ref))
+      else
+        where(id: max_id)
+      end
     end
 
     def self.latest_status(ref = nil)
@@ -150,10 +155,6 @@ module Ci
       builds.latest.with_artifacts_not_expired.includes(project: [:namespace])
     end
 
-    def project_id
-      project.id
-    end
-
     # For now the only user who participates is the user who triggered
     def participants(_current_user = nil)
       Array(user)
diff --git a/app/models/ci/runner.rb b/app/models/ci/runner.rb
index 07a086b0aca..4863c34a6a6 100644
--- a/app/models/ci/runner.rb
+++ b/app/models/ci/runner.rb
@@ -4,8 +4,8 @@ module Ci
 
     RUNNER_QUEUE_EXPIRY_TIME = 60.minutes
     LAST_CONTACT_TIME = 1.hour.ago
-    AVAILABLE_SCOPES = %w[specific shared active paused online]
-    FORM_EDITABLE = %i[description tag_list active run_untagged locked]
+    AVAILABLE_SCOPES = %w[specific shared active paused online].freeze
+    FORM_EDITABLE = %i[description tag_list active run_untagged locked].freeze
 
     has_many :builds
     has_many :runner_projects, dependent: :destroy
diff --git a/app/models/ci/runner_project.rb b/app/models/ci/runner_project.rb
index 1f9baeca5b1..234376a7e4c 100644
--- a/app/models/ci/runner_project.rb
+++ b/app/models/ci/runner_project.rb
@@ -5,6 +5,6 @@ module Ci
     belongs_to :runner
     belongs_to :project, foreign_key: :gl_project_id
 
-    validates_uniqueness_of :runner_id, scope: :gl_project_id
+    validates :runner_id, uniqueness: { scope: :gl_project_id }
   end
 end
diff --git a/app/models/ci/trigger.rb b/app/models/ci/trigger.rb
index 62889fe80d8..39a1dd86241 100644
--- a/app/models/ci/trigger.rb
+++ b/app/models/ci/trigger.rb
@@ -7,8 +7,8 @@ module Ci
     belongs_to :project, foreign_key: :gl_project_id
     has_many :trigger_requests, dependent: :destroy
 
-    validates_presence_of :token
-    validates_uniqueness_of :token
+    validates :token, presence: true
+    validates :token, uniqueness: true
 
     before_validation :set_default_values
 
diff --git a/app/models/commit.rb b/app/models/commit.rb
index 46f06733da1..0a18986ef26 100644
--- a/app/models/commit.rb
+++ b/app/models/commit.rb
@@ -22,12 +22,12 @@ class Commit
   DIFF_HARD_LIMIT_LINES = 50000
 
   # The SHA can be between 7 and 40 hex characters.
-  COMMIT_SHA_PATTERN = '\h{7,40}'
+  COMMIT_SHA_PATTERN = '\h{7,40}'.freeze
 
   class << self
     def decorate(commits, project)
       commits.map do |commit|
-        if commit.kind_of?(Commit)
+        if commit.is_a?(Commit)
           commit
         else
           self.new(commit, project)
@@ -105,7 +105,7 @@ class Commit
   end
 
   def diff_line_count
-    @diff_line_count ||= Commit::diff_line_count(raw_diffs)
+    @diff_line_count ||= Commit.diff_line_count(raw_diffs)
     @diff_line_count
   end
 
@@ -122,11 +122,12 @@ class Commit
   def full_title
     return @full_title if @full_title
 
-    if safe_message.blank?
-      @full_title = no_commit_message
-    else
-      @full_title = safe_message.split("\n", 2).first
-    end
+    @full_title =
+      if safe_message.blank?
+        no_commit_message
+      else
+        safe_message.split("\n", 2).first
+      end
   end
 
   # Returns the commits description
diff --git a/app/models/commit_status.rb b/app/models/commit_status.rb
index 99a6326309d..fc750a3e5e9 100644
--- a/app/models/commit_status.rb
+++ b/app/models/commit_status.rb
@@ -10,10 +10,11 @@ class CommitStatus < ActiveRecord::Base
   belongs_to :user
 
   delegate :commit, to: :pipeline
+  delegate :sha, :short_sha, to: :pipeline
 
   validates :pipeline, presence: true, unless: :importing?
 
-  validates_presence_of :name
+  validates :name, presence: true
 
   alias_attribute :author, :user
 
@@ -102,8 +103,6 @@ class CommitStatus < ActiveRecord::Base
     end
   end
 
-  delegate :sha, :short_sha, to: :pipeline
-
   def before_sha
     pipeline.before_sha || Gitlab::Git::BLANK_SHA
   end
diff --git a/app/models/concerns/cache_markdown_field.rb b/app/models/concerns/cache_markdown_field.rb
index a600f9c14c5..8ea95beed79 100644
--- a/app/models/concerns/cache_markdown_field.rb
+++ b/app/models/concerns/cache_markdown_field.rb
@@ -11,14 +11,15 @@ module CacheMarkdownField
   # Knows about the relationship between markdown and html field names, and
   # stores the rendering contexts for the latter
   class FieldData
-    extend Forwardable
-
     def initialize
       @data = {}
     end
 
-    def_delegators :@data, :[], :[]=
-    def_delegator :@data, :keys, :markdown_fields
+    delegate :[], :[]=, to: :@data
+
+    def markdown_fields
+      @data.keys
+    end
 
     def html_field(markdown_field)
       "#{markdown_field}_html"
@@ -45,7 +46,7 @@ module CacheMarkdownField
     Project
     Release
     Snippet
-  ]
+  ].freeze
 
   def self.caching_classes
     CACHING_CLASSES.map(&:constantize)
diff --git a/app/models/concerns/case_sensitivity.rb b/app/models/concerns/case_sensitivity.rb
index fe0cea8465f..034e9f40ff0 100644
--- a/app/models/concerns/case_sensitivity.rb
+++ b/app/models/concerns/case_sensitivity.rb
@@ -13,11 +13,12 @@ module CaseSensitivity
       params.each do |key, value|
         column = ActiveRecord::Base.connection.quote_table_name(key)
 
-        if cast_lower
-          condition = "LOWER(#{column}) = LOWER(:value)"
-        else
-          condition = "#{column} = :value"
-        end
+        condition =
+          if cast_lower
+            "LOWER(#{column}) = LOWER(:value)"
+          else
+            "#{column} = :value"
+          end
 
         criteria = criteria.where(condition, value: value)
       end
diff --git a/app/models/concerns/has_status.rb b/app/models/concerns/has_status.rb
index 431c0354969..aea359e70bb 100644
--- a/app/models/concerns/has_status.rb
+++ b/app/models/concerns/has_status.rb
@@ -1,12 +1,12 @@
 module HasStatus
   extend ActiveSupport::Concern
 
-  DEFAULT_STATUS = 'created'
-  AVAILABLE_STATUSES = %w[created pending running success failed canceled skipped]
-  STARTED_STATUSES = %w[running success failed skipped]
-  ACTIVE_STATUSES = %w[pending running]
-  COMPLETED_STATUSES = %w[success failed canceled skipped]
-  ORDERED_STATUSES = %w[failed pending running canceled success skipped]
+  DEFAULT_STATUS = 'created'.freeze
+  AVAILABLE_STATUSES = %w[created pending running success failed canceled skipped].freeze
+  STARTED_STATUSES = %w[running success failed skipped].freeze
+  ACTIVE_STATUSES = %w[pending running].freeze
+  COMPLETED_STATUSES = %w[success failed canceled skipped].freeze
+  ORDERED_STATUSES = %w[failed pending running canceled success skipped].freeze
 
   class_methods do
     def status_sql
diff --git a/app/models/concerns/issuable.rb b/app/models/concerns/issuable.rb
index c9c6bd24d75..37c727b5d9f 100644
--- a/app/models/concerns/issuable.rb
+++ b/app/models/concerns/issuable.rb
@@ -46,6 +46,17 @@ module Issuable
 
     has_one :metrics
 
+    delegate :name,
+             :email,
+             to: :author,
+             prefix: true
+
+    delegate :name,
+             :email,
+             to: :assignee,
+             allow_nil: true,
+             prefix: true
+
     validates :author, presence: true
     validates :title, presence: true, length: { maximum: 255 }
 
@@ -68,21 +79,10 @@ module Issuable
 
     scope :without_label, -> { joins("LEFT OUTER JOIN label_links ON label_links.target_type = '#{name}' AND label_links.target_id = #{table_name}.id").where(label_links: { id: nil }) }
     scope :join_project, -> { joins(:project) }
-    scope :inc_notes_with_associations, -> { includes(notes: [ :project, :author, :award_emoji ]) }
+    scope :inc_notes_with_associations, -> { includes(notes: [:project, :author, :award_emoji]) }
     scope :references_project, -> { references(:project) }
     scope :non_archived, -> { join_project.where(projects: { archived: false }) }
 
-    delegate :name,
-             :email,
-             to: :author,
-             prefix: true
-
-    delegate :name,
-             :email,
-             to: :assignee,
-             allow_nil: true,
-             prefix: true
-
     attr_mentionable :title, pipeline: :single_line
     attr_mentionable :description
 
@@ -182,7 +182,7 @@ module Issuable
     def grouping_columns(sort)
       grouping_columns = [arel_table[:id]]
 
-      if ["milestone_due_desc", "milestone_due_asc"].include?(sort)
+      if %w(milestone_due_desc milestone_due_asc).include?(sort)
         milestone_table = Milestone.arel_table
         grouping_columns << milestone_table[:id]
         grouping_columns << milestone_table[:due_date]
@@ -235,7 +235,7 @@ module Issuable
       # DEPRECATED
       repository: project.hook_attrs.slice(:name, :url, :description, :homepage)
     }
-    hook_data.merge!(assignee: assignee.hook_attrs) if assignee
+    hook_data[:assignee] = assignee.hook_attrs if assignee
 
     hook_data
   end
diff --git a/app/models/concerns/reactive_service.rb b/app/models/concerns/reactive_service.rb
index e1f868a299b..713246039c1 100644
--- a/app/models/concerns/reactive_service.rb
+++ b/app/models/concerns/reactive_service.rb
@@ -5,6 +5,6 @@ module ReactiveService
     include ReactiveCaching
 
     # Default cache key: class name + project_id
-    self.reactive_cache_key = ->(service) { [ service.class.model_name.singular, service.project_id ] }
+    self.reactive_cache_key = ->(service) { [service.class.model_name.singular, service.project_id] }
   end
 end
diff --git a/app/models/concerns/sortable.rb b/app/models/concerns/sortable.rb
index 7edb0acd56c..b9a2d812edd 100644
--- a/app/models/concerns/sortable.rb
+++ b/app/models/concerns/sortable.rb
@@ -46,11 +46,12 @@ module Sortable
         where("label_links.target_id = #{target_column}").
         reorder(nil)
 
-      if target_type_column
-        query = query.where("label_links.target_type = #{target_type_column}")
-      else
-        query = query.where(label_links: { target_type: target_type })
-      end
+      query =
+        if target_type_column
+          query.where("label_links.target_type = #{target_type_column}")
+        else
+          query.where(label_links: { target_type: target_type })
+        end
 
       query = query.where.not(title: excluded_labels) if excluded_labels.present?
 
diff --git a/app/models/concerns/uniquify.rb b/app/models/concerns/uniquify.rb
new file mode 100644
index 00000000000..a7fe5951b6e
--- /dev/null
+++ b/app/models/concerns/uniquify.rb
@@ -0,0 +1,30 @@
+class Uniquify
+  # Return a version of the given 'base' string that is unique
+  # by appending a counter to it. Uniqueness is determined by
+  # repeated calls to the passed block.
+  #
+  # If `base` is a function/proc, we expect that calling it with a
+  # candidate counter returns a string to test/return.
+  def string(base)
+    @base = base
+    @counter = nil
+
+    increment_counter! while yield(base_string)
+    base_string
+  end
+
+  private
+
+  def base_string
+    if @base.respond_to?(:call)
+      @base.call(@counter)
+    else
+      "#{@base}#{@counter}"
+    end
+  end
+
+  def increment_counter!
+    @counter ||= 0
+    @counter += 1
+  end
+end
diff --git a/app/models/diff_note.rb b/app/models/diff_note.rb
index 559b3075905..895a91139c9 100644
--- a/app/models/diff_note.rb
+++ b/app/models/diff_note.rb
@@ -8,7 +8,7 @@ class DiffNote < Note
   validates :position, presence: true
   validates :diff_line, presence: true
   validates :line_code, presence: true, line_code: true
-  validates :noteable_type, inclusion: { in: ['Commit', 'MergeRequest'] }
+  validates :noteable_type, inclusion: { in: %w(Commit MergeRequest) }
   validates :resolved_by, presence: true, if: :resolved?
   validate :positions_complete
   validate :verify_supported
diff --git a/app/models/event.rb b/app/models/event.rb
index e5027df3f8a..d7ca8e3c599 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -36,7 +36,7 @@ class Event < ActiveRecord::Base
   scope :code_push, -> { where(action: PUSHED) }
 
   scope :in_projects, ->(projects) do
-    where(project_id: projects).recent
+    where(project_id: projects.pluck(:id)).recent
   end
 
   scope :with_associations, -> { includes(:author, :project, project: :namespace).preload(:target) }
@@ -47,7 +47,7 @@ class Event < ActiveRecord::Base
     def contributions
       where("action = ? OR (target_type IN (?) AND action IN (?)) OR (target_type = ? AND action = ?)",
             Event::PUSHED,
-            ["MergeRequest", "Issue"], [Event::CREATED, Event::CLOSED, Event::MERGED],
+            %w(MergeRequest Issue), [Event::CREATED, Event::CLOSED, Event::MERGED],
             "Note", Event::COMMENTED)
     end
 
diff --git a/app/models/external_issue.rb b/app/models/external_issue.rb
index 26712c19b5a..b973bbcd8da 100644
--- a/app/models/external_issue.rb
+++ b/app/models/external_issue.rb
@@ -43,7 +43,7 @@ class ExternalIssue
   end
 
   def reference_link_text(from_project = nil)
-    return "##{id}" if /^\d+$/.match(id)
+    return "##{id}" if id =~ /^\d+$/
 
     id
   end
diff --git a/app/models/issue.rb b/app/models/issue.rb
index d8826b65fcc..de90f19f854 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -15,8 +15,6 @@ class Issue < ActiveRecord::Base
   DueThisWeek   = DueDateStruct.new('Due This Week', 'week').freeze
   DueThisMonth  = DueDateStruct.new('Due This Month', 'month').freeze
 
-  ActsAsTaggableOn.strict_case_match = true
-
   belongs_to :project
   belongs_to :moved_to, class_name: 'Issue'
 
diff --git a/app/models/label.rb b/app/models/label.rb
index 5b6b9a7a736..f68a8c9cff2 100644
--- a/app/models/label.rb
+++ b/app/models/label.rb
@@ -11,7 +11,7 @@ class Label < ActiveRecord::Base
 
   cache_markdown_field :description, pipeline: :single_line
 
-  DEFAULT_COLOR = '#428BCA'
+  DEFAULT_COLOR = '#428BCA'.freeze
 
   default_value_for :color, DEFAULT_COLOR
 
diff --git a/app/models/member.rb b/app/models/member.rb
index d07f270b757..0545bd4eedf 100644
--- a/app/models/member.rb
+++ b/app/models/member.rb
@@ -10,6 +10,8 @@ class Member < ActiveRecord::Base
   belongs_to :user
   belongs_to :source, polymorphic: true
 
+  delegate :name, :username, :email, to: :user, prefix: true
+
   validates :user, presence: true, unless: :invite?
   validates :source, presence: true
   validates :user_id, uniqueness: { scope: [:source_type, :source_id],
@@ -73,8 +75,6 @@ class Member < ActiveRecord::Base
   after_destroy :post_destroy_hook, unless: :pending?
   after_commit :refresh_member_authorized_projects
 
-  delegate :name, :username, :email, to: :user, prefix: true
-
   default_value_for :notification_level, NotificationSetting.levels[:global]
 
   class << self
diff --git a/app/models/members/group_member.rb b/app/models/members/group_member.rb
index 204f34f0269..446f9f8f8a7 100644
--- a/app/models/members/group_member.rb
+++ b/app/models/members/group_member.rb
@@ -1,11 +1,11 @@
 class GroupMember < Member
-  SOURCE_TYPE = 'Namespace'
+  SOURCE_TYPE = 'Namespace'.freeze
 
   belongs_to :group, foreign_key: 'source_id'
 
   # Make sure group member points only to group as it source
   default_value_for :source_type, SOURCE_TYPE
-  validates_format_of :source_type, with: /\ANamespace\z/
+  validates :source_type, format: { with: /\ANamespace\z/ }
   default_scope { where(source_type: SOURCE_TYPE) }
 
   def self.access_level_roles
diff --git a/app/models/members/project_member.rb b/app/models/members/project_member.rb
index 008fff0857c..912820b51ac 100644
--- a/app/models/members/project_member.rb
+++ b/app/models/members/project_member.rb
@@ -1,5 +1,5 @@
 class ProjectMember < Member
-  SOURCE_TYPE = 'Project'
+  SOURCE_TYPE = 'Project'.freeze
 
   include Gitlab::ShellAdapter
 
@@ -7,7 +7,7 @@ class ProjectMember < Member
 
   # Make sure project member points only to project as it source
   default_value_for :source_type, SOURCE_TYPE
-  validates_format_of :source_type, with: /\AProject\z/
+  validates :source_type, format: { with: /\AProject\z/ }
   validates :access_level, inclusion: { in: Gitlab::Access.values }
   default_scope { where(source_type: SOURCE_TYPE) }
 
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 204d2b153ad..7eb875f1ef5 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -203,7 +203,11 @@ class MergeRequest < ActiveRecord::Base
   end
 
   def diff_size
-    opts = diff_options || {}
+    # The `#diffs` method ends up at an instance of a class inheriting from
+    # `Gitlab::Diff::FileCollection::Base`, so use those options as defaults
+    # here too, to get the same diff size without performing highlighting.
+    #
+    opts = Gitlab::Diff::FileCollection::Base.default_options.merge(diff_options || {})
 
     raw_diffs(opts).size
   end
@@ -527,7 +531,7 @@ class MergeRequest < ActiveRecord::Base
     }
 
     if diff_head_commit
-      attrs.merge!(last_commit: diff_head_commit.hook_attrs)
+      attrs[:last_commit] = diff_head_commit.hook_attrs
     end
 
     attributes.merge!(attrs)
diff --git a/app/models/merge_request_diff.rb b/app/models/merge_request_diff.rb
index 70bad2a4396..baee00b8fcd 100644
--- a/app/models/merge_request_diff.rb
+++ b/app/models/merge_request_diff.rb
@@ -7,7 +7,7 @@ class MergeRequestDiff < ActiveRecord::Base
   COMMITS_SAFE_SIZE = 100
 
   # Valid types of serialized diffs allowed by Gitlab::Git::Diff
-  VALID_CLASSES = [Hash, Rugged::Patch, Rugged::Diff::Delta]
+  VALID_CLASSES = [Hash, Rugged::Patch, Rugged::Diff::Delta].freeze
 
   belongs_to :merge_request
 
diff --git a/app/models/namespace.rb b/app/models/namespace.rb
index bd0336c984a..3137dd32f93 100644
--- a/app/models/namespace.rb
+++ b/app/models/namespace.rb
@@ -98,14 +98,8 @@ class Namespace < ActiveRecord::Base
       # Work around that by setting their username to "blank", followed by a counter.
       path = "blank" if path.blank?
 
-      counter = 0
-      base = path
-      while Namespace.find_by_path_or_name(path)
-        counter += 1
-        path = "#{base}#{counter}"
-      end
-
-      path
+      uniquify = Uniquify.new
+      uniquify.string(path) { |s| Namespace.find_by_path_or_name(s) }
     end
   end
 
diff --git a/app/models/network/graph.rb b/app/models/network/graph.rb
index b524ca50ee8..0bbc9451ffd 100644
--- a/app/models/network/graph.rb
+++ b/app/models/network/graph.rb
@@ -188,11 +188,12 @@ module Network
       end
 
       # and mark it as reserved
-      if parent_time.nil?
-        min_time = leaves.first.time
-      else
-        min_time = parent_time + 1
-      end
+      min_time =
+        if parent_time.nil?
+          leaves.first.time
+        else
+          parent_time + 1
+        end
 
       max_time = leaves.last.time
       leaves.last.parents(@map).each do |parent|
diff --git a/app/models/note.rb b/app/models/note.rb
index 029fe667a45..d6d5396afa5 100644
--- a/app/models/note.rb
+++ b/app/models/note.rb
@@ -72,7 +72,7 @@ class Note < ActiveRecord::Base
   scope :inc_author, ->{ includes(:author) }
   scope :inc_relations_for_view, ->{ includes(:project, :author, :updated_by, :resolved_by, :award_emoji) }
 
-  scope :diff_notes, ->{ where(type: ['LegacyDiffNote', 'DiffNote']) }
+  scope :diff_notes, ->{ where(type: %w(LegacyDiffNote DiffNote)) }
   scope :non_diff_notes, ->{ where(type: ['Note', nil]) }
 
   scope :with_associations, -> do
diff --git a/app/models/notification_setting.rb b/app/models/notification_setting.rb
index 58f6214bea7..52577bd52ea 100644
--- a/app/models/notification_setting.rb
+++ b/app/models/notification_setting.rb
@@ -35,11 +35,11 @@ class NotificationSetting < ActiveRecord::Base
     :merge_merge_request,
     :failed_pipeline,
     :success_pipeline
-  ]
+  ].freeze
 
   EXCLUDED_WATCHER_EVENTS = [
     :success_pipeline
-  ]
+  ].freeze
 
   store :events, accessors: EMAIL_EVENTS, coder: JSON
 
diff --git a/app/models/pages_domain.rb b/app/models/pages_domain.rb
index 0b9ebf1ffe2..f2f2fc1e32a 100644
--- a/app/models/pages_domain.rb
+++ b/app/models/pages_domain.rb
@@ -2,7 +2,7 @@ class PagesDomain < ActiveRecord::Base
   belongs_to :project
 
   validates :domain, hostname: true
-  validates_uniqueness_of :domain, case_sensitive: false
+  validates :domain, uniqueness: { case_sensitive: false }
   validates :certificate, certificate: true, allow_nil: true, allow_blank: true
   validates :key, certificate_key: true, allow_nil: true, allow_blank: true
 
diff --git a/app/models/project.rb b/app/models/project.rb
index 411299eef63..e06fc30dc8a 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -22,7 +22,7 @@ class Project < ActiveRecord::Base
   class BoardLimitExceeded < StandardError; end
 
   NUMBER_OF_PERMITTED_BOARDS = 1
-  UNKNOWN_IMPORT_URL = 'http://unknown.git'
+  UNKNOWN_IMPORT_URL = 'http://unknown.git'.freeze
 
   cache_markdown_field :description, pipeline: :description
 
@@ -70,8 +70,7 @@ class Project < ActiveRecord::Base
 
   after_validation :check_pending_delete
 
-  ActsAsTaggableOn.strict_case_match = true
-  acts_as_taggable_on :tags
+  acts_as_taggable
 
   attr_accessor :new_default_branch
   attr_accessor :old_path_with_namespace
@@ -172,9 +171,11 @@ class Project < ActiveRecord::Base
   accepts_nested_attributes_for :project_feature
 
   delegate :name, to: :owner, allow_nil: true, prefix: true
+  delegate :count, to: :forks, prefix: true
   delegate :members, to: :team, prefix: true
   delegate :add_user, to: :team
   delegate :add_guest, :add_reporter, :add_developer, :add_master, to: :team
+  delegate :empty_repo?, to: :repository
 
   # Validations
   validates :creator, presence: true, on: :create
@@ -191,8 +192,8 @@ class Project < ActiveRecord::Base
     format: { with: Gitlab::Regex.project_path_regex,
               message: Gitlab::Regex.project_path_regex_message }
   validates :namespace, presence: true
-  validates_uniqueness_of :name, scope: :namespace_id
-  validates_uniqueness_of :path, scope: :namespace_id
+  validates :name, uniqueness: { scope: :namespace_id }
+  validates :path, uniqueness: { scope: :namespace_id }
   validates :import_url, addressable_url: true, if: :external_import?
   validates :star_count, numericality: { greater_than_or_equal_to: 0 }
   validate :check_limit, on: :create
@@ -358,7 +359,7 @@ class Project < ActiveRecord::Base
     end
 
     def reference_pattern
-      name_pattern = Gitlab::Regex::NAMESPACE_REGEX_STR
+      name_pattern = Gitlab::Regex::FULL_NAMESPACE_REGEX_STR
 
       %r{
         ((?<namespace>#{name_pattern})\/)?
@@ -453,13 +454,14 @@ class Project < ActiveRecord::Base
   end
 
   def add_import_job
-    if forked?
-      job_id = RepositoryForkWorker.perform_async(id, forked_from_project.repository_storage_path,
-                                                  forked_from_project.path_with_namespace,
-                                                  self.namespace.full_path)
-    else
-      job_id = RepositoryImportWorker.perform_async(self.id)
-    end
+    job_id =
+      if forked?
+        RepositoryForkWorker.perform_async(id, forked_from_project.repository_storage_path,
+          forked_from_project.path_with_namespace,
+          self.namespace.full_path)
+      else
+        RepositoryImportWorker.perform_async(self.id)
+      end
 
     if job_id
       Rails.logger.info "Import job started for #{path_with_namespace} with job ID #{job_id}"
@@ -837,10 +839,6 @@ class Project < ActiveRecord::Base
     false
   end
 
-  def empty_repo?
-    repository.empty_repo?
-  end
-
   def repo
     repository.raw
   end
@@ -849,10 +847,6 @@ class Project < ActiveRecord::Base
     gitlab_shell.url_to_repo(path_with_namespace)
   end
 
-  def namespace_dir
-    namespace.try(:path) || ''
-  end
-
   def repo_exists?
     @repo_exists ||= repository.exists?
   rescue
@@ -875,8 +869,14 @@ class Project < ActiveRecord::Base
     url_to_repo
   end
 
-  def http_url_to_repo
-    "#{web_url}.git"
+  def http_url_to_repo(user = nil)
+    url = web_url
+
+    if user
+      url.sub!(%r{\Ahttps?://}) { |protocol| "#{protocol}#{user.username}@" }
+    end
+
+    "#{url}.git"
   end
 
   # Check if current branch name is marked as protected in the system
@@ -901,8 +901,8 @@ class Project < ActiveRecord::Base
 
   def rename_repo
     path_was = previous_changes['path'].first
-    old_path_with_namespace = File.join(namespace_dir, path_was)
-    new_path_with_namespace = File.join(namespace_dir, path)
+    old_path_with_namespace = File.join(namespace.full_path, path_was)
+    new_path_with_namespace = File.join(namespace.full_path, path)
 
     Rails.logger.error "Attempting to rename #{old_path_with_namespace} -> #{new_path_with_namespace}"
 
@@ -1028,10 +1028,6 @@ class Project < ActiveRecord::Base
     forked? && project == forked_from_project
   end
 
-  def forks_count
-    forks.count
-  end
-
   def origin_merge_requests
     merge_requests.where(source_project_id: self.id)
   end
diff --git a/app/models/project_feature.rb b/app/models/project_feature.rb
index 03194fc2141..e3ef4919b28 100644
--- a/app/models/project_feature.rb
+++ b/app/models/project_feature.rb
@@ -18,7 +18,7 @@ class ProjectFeature < ActiveRecord::Base
   PRIVATE  = 10
   ENABLED  = 20
 
-  FEATURES = %i(issues merge_requests wiki snippets builds repository)
+  FEATURES = %i(issues merge_requests wiki snippets builds repository).freeze
 
   class << self
     def access_level_attribute(feature)
diff --git a/app/models/project_services/buildkite_service.rb b/app/models/project_services/buildkite_service.rb
index 0956c4a4ede..5fb95050b83 100644
--- a/app/models/project_services/buildkite_service.rb
+++ b/app/models/project_services/buildkite_service.rb
@@ -3,7 +3,7 @@ require "addressable/uri"
 class BuildkiteService < CiService
   include ReactiveService
 
-  ENDPOINT = "https://buildkite.com"
+  ENDPOINT = "https://buildkite.com".freeze
 
   prop_accessor :project_url, :token
   boolean_accessor :enable_ssl_verification
diff --git a/app/models/project_services/chat_message/issue_message.rb b/app/models/project_services/chat_message/issue_message.rb
index b96aca47e65..791e5b0cec7 100644
--- a/app/models/project_services/chat_message/issue_message.rb
+++ b/app/models/project_services/chat_message/issue_message.rb
@@ -51,7 +51,8 @@ module ChatMessage
         title: issue_title,
         title_link: issue_url,
         text: format(description),
-        color: "#C95823" }]
+        color: "#C95823"
+      }]
     end
 
     def project_link
diff --git a/app/models/project_services/drone_ci_service.rb b/app/models/project_services/drone_ci_service.rb
index 1ad9efac196..2717c240f05 100644
--- a/app/models/project_services/drone_ci_service.rb
+++ b/app/models/project_services/drone_ci_service.rb
@@ -39,7 +39,7 @@ class DroneCiService < CiService
   def commit_status_path(sha, ref)
     url = [drone_url,
            "gitlab/#{project.full_path}/commits/#{sha}",
-           "?branch=#{URI::encode(ref.to_s)}&access_token=#{token}"]
+           "?branch=#{URI.encode(ref.to_s)}&access_token=#{token}"]
 
     URI.join(*url).to_s
   end
@@ -74,7 +74,7 @@ class DroneCiService < CiService
   def build_page(sha, ref)
     url = [drone_url,
            "gitlab/#{project.full_path}/redirect/commits/#{sha}",
-           "?branch=#{URI::encode(ref.to_s)}"]
+           "?branch=#{URI.encode(ref.to_s)}"]
 
     URI.join(*url).to_s
   end
@@ -114,7 +114,7 @@ class DroneCiService < CiService
   end
 
   def merge_request_valid?(data)
-    ['opened', 'reopened'].include?(data[:object_attributes][:state]) &&
+    %w(opened reopened).include?(data[:object_attributes][:state]) &&
       data[:object_attributes][:merge_status] == 'unchecked'
   end
 end
diff --git a/app/models/project_services/hipchat_service.rb b/app/models/project_services/hipchat_service.rb
index 72da219df28..c4142c38b2f 100644
--- a/app/models/project_services/hipchat_service.rb
+++ b/app/models/project_services/hipchat_service.rb
@@ -6,7 +6,7 @@ class HipchatService < Service
     a b i strong em br img pre code
     table th tr td caption colgroup col thead tbody tfoot
     ul ol li dl dt dd
-  ]
+  ].freeze
 
   prop_accessor :token, :room, :server, :color, :api_version
   boolean_accessor :notify_only_broken_builds, :notify
@@ -36,7 +36,7 @@ class HipchatService < Service
       { type: 'text', name: 'token',     placeholder: 'Room token' },
       { type: 'text', name: 'room',      placeholder: 'Room name or ID' },
       { type: 'checkbox', name: 'notify' },
-      { type: 'select', name: 'color', choices: ['yellow', 'red', 'green', 'purple', 'gray', 'random'] },
+      { type: 'select', name: 'color', choices: %w(yellow red green purple gray random) },
       { type: 'text', name: 'api_version',
         placeholder: 'Leave blank for default (v2)' },
       { type: 'text', name: 'server',
diff --git a/app/models/project_services/irker_service.rb b/app/models/project_services/irker_service.rb
index 5d6862d9faa..c62bb4fa120 100644
--- a/app/models/project_services/irker_service.rb
+++ b/app/models/project_services/irker_service.rb
@@ -33,7 +33,8 @@ class IrkerService < Service
   end
 
   def settings
-    { server_host: server_host.present? ? server_host : 'localhost',
+    {
+      server_host: server_host.present? ? server_host : 'localhost',
       server_port: server_port.present? ? server_port : 6659
     }
   end
diff --git a/app/models/project_services/kubernetes_service.rb b/app/models/project_services/kubernetes_service.rb
index f2f019c43bb..9819e723fe8 100644
--- a/app/models/project_services/kubernetes_service.rb
+++ b/app/models/project_services/kubernetes_service.rb
@@ -3,7 +3,7 @@ class KubernetesService < DeploymentService
   include Gitlab::Kubernetes
   include ReactiveCaching
 
-  self.reactive_cache_key = ->(service) { [ service.class.model_name.singular, service.project_id ] }
+  self.reactive_cache_key = ->(service) { [service.class.model_name.singular, service.project_id] }
 
   # Namespace defaults to the project path, but can be overridden in case that
   # is an invalid or inappropriate name
@@ -62,23 +62,19 @@ class KubernetesService < DeploymentService
         { type: 'text',
           name: 'namespace',
           title: 'Kubernetes namespace',
-          placeholder: 'Kubernetes namespace',
-        },
+          placeholder: 'Kubernetes namespace' },
         { type: 'text',
           name: 'api_url',
           title: 'API URL',
-          placeholder: 'Kubernetes API URL, like https://kube.example.com/',
-        },
+          placeholder: 'Kubernetes API URL, like https://kube.example.com/' },
         { type: 'text',
           name: 'token',
           title: 'Service token',
-          placeholder: 'Service token',
-        },
+          placeholder: 'Service token' },
         { type: 'textarea',
           name: 'ca_pem',
           title: 'Custom CA bundle',
-          placeholder: 'Certificate Authority bundle (PEM format)',
-        },
+          placeholder: 'Certificate Authority bundle (PEM format)' },
     ]
   end
 
@@ -167,7 +163,7 @@ class KubernetesService < DeploymentService
     url = URI.parse(api_url)
     prefix = url.path.sub(%r{/+\z}, '')
 
-    url.path = [ prefix, *parts ].join("/")
+    url.path = [prefix, *parts].join("/")
 
     url.to_s
   end
diff --git a/app/models/project_services/mattermost_service.rb b/app/models/project_services/mattermost_service.rb
index 4ebc5318da1..c13538e9fea 100644
--- a/app/models/project_services/mattermost_service.rb
+++ b/app/models/project_services/mattermost_service.rb
@@ -15,10 +15,10 @@ class MattermostService < ChatNotificationService
     'This service sends notifications about projects events to Mattermost channels.<br />
     To set up this service:
     <ol>
-      <li><a href="https://docs.mattermost.com/developer/webhooks-incoming.html#enabling-incoming-webhooks">Enable incoming webhooks</a> in your Mattermost installation. </li>
-      <li><a href="https://docs.mattermost.com/developer/webhooks-incoming.html#creating-integrations-using-incoming-webhooks">Add an incoming webhook</a> in your Mattermost team. The default channel can be overridden for each event. </li>
-      <li>Paste the webhook <strong>URL</strong> into the field bellow. </li>
-      <li>Select events below to enable notifications. The channel and username are optional. </li>
+      <li><a href="https://docs.mattermost.com/developer/webhooks-incoming.html#enabling-incoming-webhooks">Enable incoming webhooks</a> in your Mattermost installation.</li>
+      <li><a href="https://docs.mattermost.com/developer/webhooks-incoming.html#creating-integrations-using-incoming-webhooks">Add an incoming webhook</a> in your Mattermost team. The default channel can be overridden for each event.</li>
+      <li>Paste the webhook <strong>URL</strong> into the field below.</li>
+      <li>Select events below to enable notifications. The <strong>Channel handle</strong> and <strong>Username</strong> fields are optional.</li>
     </ol>'
   end
 
@@ -28,14 +28,14 @@ class MattermostService < ChatNotificationService
 
   def default_fields
     [
-      { type: 'text', name: 'webhook', placeholder: 'http://mattermost_host/hooks/...' },
-      { type: 'text', name: 'username', placeholder: 'username' },
+      { type: 'text', name: 'webhook', placeholder: 'e.g. http://mattermost_host/hooks/…' },
+      { type: 'text', name: 'username', placeholder: 'e.g. GitLab' },
       { type: 'checkbox', name: 'notify_only_broken_builds' },
       { type: 'checkbox', name: 'notify_only_broken_pipelines' },
     ]
   end
 
   def default_channel_placeholder
-    "town-square"
+    "Channel handle (e.g. town-square)"
   end
 end
diff --git a/app/models/project_services/pivotaltracker_service.rb b/app/models/project_services/pivotaltracker_service.rb
index 9cc642591f4..d86f4f6f448 100644
--- a/app/models/project_services/pivotaltracker_service.rb
+++ b/app/models/project_services/pivotaltracker_service.rb
@@ -1,7 +1,7 @@
 class PivotaltrackerService < Service
   include HTTParty
 
-  API_ENDPOINT = 'https://www.pivotaltracker.com/services/v5/source_commits'
+  API_ENDPOINT = 'https://www.pivotaltracker.com/services/v5/source_commits'.freeze
 
   prop_accessor :token, :restrict_to_branch
   validates :token, presence: true, if: :activated?
diff --git a/app/models/project_services/pushover_service.rb b/app/models/project_services/pushover_service.rb
index a963d27a376..3e618a8dbf1 100644
--- a/app/models/project_services/pushover_service.rb
+++ b/app/models/project_services/pushover_service.rb
@@ -29,25 +29,24 @@ class PushoverService < Service
           ['Normal Priority', 0],
           ['High Priority', 1]
         ],
-        default_choice: 0
-      },
+        default_choice: 0 },
       { type: 'select', name: 'sound', choices:
         [
           ['Device default sound', nil],
           ['Pushover (default)', 'pushover'],
-          ['Bike', 'bike'],
-          ['Bugle', 'bugle'],
+          %w(Bike bike),
+          %w(Bugle bugle),
           ['Cash Register', 'cashregister'],
-          ['Classical', 'classical'],
-          ['Cosmic', 'cosmic'],
-          ['Falling', 'falling'],
-          ['Gamelan', 'gamelan'],
-          ['Incoming', 'incoming'],
-          ['Intermission', 'intermission'],
-          ['Magic', 'magic'],
-          ['Mechanical', 'mechanical'],
+          %w(Classical classical),
+          %w(Cosmic cosmic),
+          %w(Falling falling),
+          %w(Gamelan gamelan),
+          %w(Incoming incoming),
+          %w(Intermission intermission),
+          %w(Magic magic),
+          %w(Mechanical mechanical),
           ['Piano Bar', 'pianobar'],
-          ['Siren', 'siren'],
+          %w(Siren siren),
           ['Space Alarm', 'spacealarm'],
           ['Tug Boat', 'tugboat'],
           ['Alien Alarm (long)', 'alien'],
@@ -56,8 +55,7 @@ class PushoverService < Service
           ['Pushover Echo (long)', 'echo'],
           ['Up Down (long)', 'updown'],
           ['None (silent)', 'none']
-        ]
-      },
+        ] },
     ]
   end
 
@@ -72,13 +70,14 @@ class PushoverService < Service
     before = data[:before]
     after = data[:after]
 
-    if Gitlab::Git.blank_ref?(before)
-      message = "#{data[:user_name]} pushed new branch \"#{ref}\"."
-    elsif Gitlab::Git.blank_ref?(after)
-      message = "#{data[:user_name]} deleted branch \"#{ref}\"."
-    else
-      message = "#{data[:user_name]} push to branch \"#{ref}\"."
-    end
+    message =
+      if Gitlab::Git.blank_ref?(before)
+        "#{data[:user_name]} pushed new branch \"#{ref}\"."
+      elsif Gitlab::Git.blank_ref?(after)
+        "#{data[:user_name]} deleted branch \"#{ref}\"."
+      else
+        "#{data[:user_name]} push to branch \"#{ref}\"."
+      end
 
     if data[:total_commits_count] > 0
       message << "\nTotal commits count: #{data[:total_commits_count]}"
@@ -97,7 +96,7 @@ class PushoverService < Service
 
     # Sound parameter MUST NOT be sent to API if not selected
     if sound
-      pushover_data.merge!(sound: sound)
+      pushover_data[:sound] = sound
     end
 
     PushoverService.post('/messages.json', body: pushover_data)
diff --git a/app/models/project_services/slack_service.rb b/app/models/project_services/slack_service.rb
index f77d2d7c60b..da7496573ef 100644
--- a/app/models/project_services/slack_service.rb
+++ b/app/models/project_services/slack_service.rb
@@ -13,11 +13,11 @@ class SlackService < ChatNotificationService
 
   def help
     'This service sends notifications about projects events to Slack channels.<br />
-    To setup this service:
+    To set up this service:
     <ol>
-      <li><a href="https://slack.com/apps/A0F7XDUAZ-incoming-webhooks">Add an incoming webhook</a> in your Slack team. The default channel can be overridden for each event. </li>
-      <li>Paste the <strong>Webhook URL</strong> into the field below. </li>
-      <li>Select events below to enable notifications. The channel and username are optional. </li>
+      <li><a href="https://slack.com/apps/A0F7XDUAZ-incoming-webhooks">Add an incoming webhook</a> in your Slack team. The default channel can be overridden for each event.</li>
+      <li>Paste the <strong>Webhook URL</strong> into the field below.</li>
+      <li>Select events below to enable notifications. The <strong>Channel name</strong> and <strong>Username</strong> fields are optional.</li>
     </ol>'
   end
 
@@ -27,14 +27,14 @@ class SlackService < ChatNotificationService
 
   def default_fields
     [
-      { type: 'text', name: 'webhook', placeholder: 'https://hooks.slack.com/services/...' },
-      { type: 'text', name: 'username', placeholder: 'username' },
+      { type: 'text', name: 'webhook', placeholder: 'e.g. https://hooks.slack.com/services/…' },
+      { type: 'text', name: 'username', placeholder: 'e.g. GitLab' },
       { type: 'checkbox', name: 'notify_only_broken_builds' },
       { type: 'checkbox', name: 'notify_only_broken_pipelines' },
     ]
   end
 
   def default_channel_placeholder
-    "#general"
+    "Channel name (e.g. general)"
   end
 end
diff --git a/app/models/project_statistics.rb b/app/models/project_statistics.rb
index 06abd406523..aeaf63abab9 100644
--- a/app/models/project_statistics.rb
+++ b/app/models/project_statistics.rb
@@ -4,7 +4,7 @@ class ProjectStatistics < ActiveRecord::Base
 
   before_save :update_storage_size
 
-  STORAGE_COLUMNS = [:repository_size, :lfs_objects_size, :build_artifacts_size]
+  STORAGE_COLUMNS = [:repository_size, :lfs_objects_size, :build_artifacts_size].freeze
   STATISTICS_COLUMNS = [:commit_count] + STORAGE_COLUMNS
 
   def total_repository_size
diff --git a/app/models/project_wiki.rb b/app/models/project_wiki.rb
index d0b991db112..9891f5edf41 100644
--- a/app/models/project_wiki.rb
+++ b/app/models/project_wiki.rb
@@ -5,7 +5,7 @@ class ProjectWiki
     'Markdown' => :markdown,
     'RDoc'     => :rdoc,
     'AsciiDoc' => :asciidoc
-  } unless defined?(MARKUPS)
+  }.freeze unless defined?(MARKUPS)
 
   class CouldNotCreateWikiError < StandardError; end
 
@@ -19,6 +19,9 @@ class ProjectWiki
     @user = user
   end
 
+  delegate :empty?, to: :pages
+  delegate :repository_storage_path, to: :project
+
   def path
     @project.path + '.wiki'
   end
@@ -60,10 +63,6 @@ class ProjectWiki
     !!repository.exists?
   end
 
-  def empty?
-    pages.empty?
-  end
-
   # Returns an Array of Gitlab WikiPage instances or an
   # empty Array if this Wiki has no pages.
   def pages
@@ -160,10 +159,6 @@ class ProjectWiki
     }
   end
 
-  def repository_storage_path
-    project.repository_storage_path
-  end
-
   private
 
   def init_repo(path_with_namespace)
diff --git a/app/models/protected_branch.rb b/app/models/protected_branch.rb
index 6240912a6e1..39e979ef15b 100644
--- a/app/models/protected_branch.rb
+++ b/app/models/protected_branch.rb
@@ -8,8 +8,8 @@ class ProtectedBranch < ActiveRecord::Base
   has_many :merge_access_levels, dependent: :destroy
   has_many :push_access_levels, dependent: :destroy
 
-  validates_length_of :merge_access_levels, is: 1, message: "are restricted to a single instance per protected branch."
-  validates_length_of :push_access_levels, is: 1, message: "are restricted to a single instance per protected branch."
+  validates :merge_access_levels, length: { is: 1, message: "are restricted to a single instance per protected branch." }
+  validates :push_access_levels, length: { is: 1, message: "are restricted to a single instance per protected branch." }
 
   accepts_nested_attributes_for :push_access_levels
   accepts_nested_attributes_for :merge_access_levels
diff --git a/app/models/repository.rb b/app/models/repository.rb
index 56c582cd9be..0dbf246c3a4 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -18,7 +18,7 @@ class Repository
   CACHED_METHODS = %i(size commit_count readme version contribution_guide
                       changelog license_blob license_key gitignore koding_yml
                       gitlab_ci_yml branch_names tag_names branch_count
-                      tag_count avatar exists? empty? root_ref)
+                      tag_count avatar exists? empty? root_ref).freeze
 
   # Certain method caches should be refreshed when certain types of files are
   # changed. This Hash maps file types (as returned by Gitlab::FileDetector) to
@@ -33,7 +33,7 @@ class Repository
     koding: :koding_yml,
     gitlab_ci: :gitlab_ci_yml,
     avatar: :avatar
-  }
+  }.freeze
 
   # Wraps around the given method and caches its output in Redis and an instance
   # variable.
@@ -109,9 +109,7 @@ class Repository
       offset: offset,
       after: after,
       before: before,
-      # --follow doesn't play well with --skip. See:
-      # https://gitlab.com/gitlab-org/gitlab-ce/issues/3574#note_3040520
-      follow: false,
+      follow: path.present?,
       skip_merges: skip_merges
     }
 
@@ -487,9 +485,7 @@ class Repository
   end
   cache_method :exists?
 
-  def empty?
-    raw_repository.empty?
-  end
+  delegate :empty?, to: :raw_repository
   cache_method :empty?
 
   # The size of this repository in megabytes.
@@ -508,9 +504,7 @@ class Repository
   end
   cache_method :branch_names, fallback: []
 
-  def tag_names
-    raw_repository.tag_names
-  end
+  delegate :tag_names, to: :raw_repository
   cache_method :tag_names, fallback: []
 
   def branch_count
@@ -750,136 +744,63 @@ class Repository
     @tags ||= raw_repository.tags
   end
 
-  # rubocop:disable Metrics/ParameterLists
-  def commit_dir(
-    user, path,
-    message:, branch_name:,
-    author_email: nil, author_name: nil,
-    start_branch_name: nil, start_project: project)
-    check_tree_entry_for_dir(branch_name, path)
-
-    if start_branch_name
-      start_project.repository.
-        check_tree_entry_for_dir(start_branch_name, path)
-    end
+  def create_dir(user, path, **options)
+    options[:user] = user
+    options[:actions] = [{ action: :create_dir, file_path: path }]
 
-    commit_file(
-      user,
-      "#{path}/.gitkeep",
-      '',
-      message: message,
-      branch_name: branch_name,
-      update: false,
-      author_email: author_email,
-      author_name: author_name,
-      start_branch_name: start_branch_name,
-      start_project: start_project)
+    multi_action(**options)
   end
-  # rubocop:enable Metrics/ParameterLists
 
-  # rubocop:disable Metrics/ParameterLists
-  def commit_file(
-    user, path, content,
-    message:, branch_name:, update: true,
-    author_email: nil, author_name: nil,
-    start_branch_name: nil, start_project: project)
-    unless update
-      error_message = "Filename already exists; update not allowed"
+  def create_file(user, path, content, **options)
+    options[:user] = user
+    options[:actions] = [{ action: :create, file_path: path, content: content }]
 
-      if tree_entry_at(branch_name, path)
-        raise Gitlab::Git::Repository::InvalidBlobName.new(error_message)
-      end
+    multi_action(**options)
+  end
 
-      if start_branch_name &&
-          start_project.repository.tree_entry_at(start_branch_name, path)
-        raise Gitlab::Git::Repository::InvalidBlobName.new(error_message)
-      end
-    end
+  def update_file(user, path, content, **options)
+    previous_path = options.delete(:previous_path)
+    action = previous_path && previous_path != path ? :move : :update
 
-    multi_action(
-      user: user,
-      message: message,
-      branch_name: branch_name,
-      author_email: author_email,
-      author_name: author_name,
-      start_branch_name: start_branch_name,
-      start_project: start_project,
-      actions: [{ action: :create,
-                  file_path: path,
-                  content: content }])
-  end
-  # rubocop:enable Metrics/ParameterLists
+    options[:user] = user
+    options[:actions] = [{ action: action, file_path: path, previous_path: previous_path, content: content }]
 
-  # rubocop:disable Metrics/ParameterLists
-  def update_file(
-    user, path, content,
-    message:, branch_name:, previous_path:,
-    author_email: nil, author_name: nil,
-    start_branch_name: nil, start_project: project)
-    action = if previous_path && previous_path != path
-               :move
-             else
-               :update
-             end
-
-    multi_action(
-      user: user,
-      message: message,
-      branch_name: branch_name,
-      author_email: author_email,
-      author_name: author_name,
-      start_branch_name: start_branch_name,
-      start_project: start_project,
-      actions: [{ action: action,
-                  file_path: path,
-                  content: content,
-                  previous_path: previous_path }])
+    multi_action(**options)
   end
-  # rubocop:enable Metrics/ParameterLists
 
-  # rubocop:disable Metrics/ParameterLists
-  def remove_file(
-    user, path,
-    message:, branch_name:,
-    author_email: nil, author_name: nil,
-    start_branch_name: nil, start_project: project)
-    multi_action(
-      user: user,
-      message: message,
-      branch_name: branch_name,
-      author_email: author_email,
-      author_name: author_name,
-      start_branch_name: start_branch_name,
-      start_project: start_project,
-      actions: [{ action: :delete,
-                  file_path: path }])
+  def delete_file(user, path, **options)
+    options[:user] = user
+    options[:actions] = [{ action: :delete, file_path: path }]
+
+    multi_action(**options)
   end
-  # rubocop:enable Metrics/ParameterLists
 
   # rubocop:disable Metrics/ParameterLists
   def multi_action(
     user:, branch_name:, message:, actions:,
     author_email: nil, author_name: nil,
     start_branch_name: nil, start_project: project)
+
     GitOperationService.new(user, self).with_branch(
       branch_name,
       start_branch_name: start_branch_name,
       start_project: start_project) do |start_commit|
-      index = rugged.index
 
-      parents = if start_commit
-                  index.read_tree(start_commit.raw_commit.tree)
-                  [start_commit.sha]
-                else
-                  []
-                end
+      index = Gitlab::Git::Index.new(raw_repository)
 
-      actions.each do |act|
-        git_action(index, act)
+      if start_commit
+        index.read_tree(start_commit.raw_commit.tree)
+        parents = [start_commit.sha]
+      else
+        parents = []
+      end
+
+      actions.each do |options|
+        index.public_send(options.delete(:action), options)
       end
 
       options = {
-        tree: index.write_tree(rugged),
+        tree: index.write_tree,
         message: message,
         parents: parents
       }
@@ -892,7 +813,7 @@ class Repository
 
   def get_committer_and_author(user, email: nil, name: nil)
     committer = user_to_committer(user)
-    author = Gitlab::Git::committer_hash(email: email, name: name) || committer
+    author = Gitlab::Git.committer_hash(email: email, name: name) || committer
 
     {
       author: author,
@@ -1170,30 +1091,6 @@ class Repository
     blob_data_at(sha, '.gitlab-ci.yml')
   end
 
-  protected
-
-  def tree_entry_at(branch_name, path)
-    branch_exists?(branch_name) &&
-      # tree_entry is private
-      raw_repository.send(:tree_entry, commit(branch_name), path)
-  end
-
-  def check_tree_entry_for_dir(branch_name, path)
-    return unless branch_exists?(branch_name)
-
-    entry = tree_entry_at(branch_name, path)
-
-    return unless entry
-
-    if entry[:type] == :blob
-      raise Gitlab::Git::Repository::InvalidBlobName.new(
-        "Directory already exists as a file")
-    else
-      raise Gitlab::Git::Repository::InvalidBlobName.new(
-        "Directory already exists")
-    end
-  end
-
   private
 
   def blob_data_at(sha, path)
@@ -1204,58 +1101,6 @@ class Repository
     blob.data
   end
 
-  def git_action(index, action)
-    path = normalize_path(action[:file_path])
-
-    if action[:action] == :move
-      previous_path = normalize_path(action[:previous_path])
-    end
-
-    case action[:action]
-    when :create, :update, :move
-      mode =
-        case action[:action]
-        when :update
-          index.get(path)[:mode]
-        when :move
-          index.get(previous_path)[:mode]
-        end
-      mode ||= 0o100644
-
-      index.remove(previous_path) if action[:action] == :move
-
-      content = if action[:encoding] == 'base64'
-                  Base64.decode64(action[:content])
-                else
-                  action[:content]
-                end
-
-      detect = CharlockHolmes::EncodingDetector.new.detect(content) if content
-
-      unless detect && detect[:type] == :binary
-        # When writing to the repo directly as we are doing here,
-        # the `core.autocrlf` config isn't taken into account.
-        content.gsub!("\r\n", "\n") if self.autocrlf
-      end
-
-      oid = rugged.write(content, :blob)
-
-      index.add(path: path, oid: oid, mode: mode)
-    when :delete
-      index.remove(path)
-    end
-  end
-
-  def normalize_path(path)
-    pathname = Gitlab::Git::PathHelper.normalize_path(path)
-
-    if pathname.each_filename.include?('..')
-      raise Gitlab::Git::Repository::InvalidBlobName.new('Invalid path')
-    end
-
-    pathname.to_s
-  end
-
   def refs_directory_exists?
     return false unless path_with_namespace
 
diff --git a/app/models/todo.rb b/app/models/todo.rb
index 3dda7948d0b..47789a21133 100644
--- a/app/models/todo.rb
+++ b/app/models/todo.rb
@@ -17,7 +17,7 @@ class Todo < ActiveRecord::Base
     APPROVAL_REQUIRED => :approval_required,
     UNMERGEABLE => :unmergeable,
     DIRECTLY_ADDRESSED => :directly_addressed
-  }
+  }.freeze
 
   belongs_to :author, class_name: "User"
   belongs_to :note
diff --git a/app/models/user.rb b/app/models/user.rb
index f614eb66e1f..40264401b53 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -81,7 +81,6 @@ class User < ActiveRecord::Base
   has_many :authorized_projects, through: :project_authorizations, source: :project
 
   has_many :snippets,                 dependent: :destroy, foreign_key: :author_id
-  has_many :issues,                   dependent: :destroy, foreign_key: :author_id
   has_many :notes,                    dependent: :destroy, foreign_key: :author_id
   has_many :merge_requests,           dependent: :destroy, foreign_key: :author_id
   has_many :events,                   dependent: :destroy, foreign_key: :author_id
@@ -99,12 +98,17 @@ class User < ActiveRecord::Base
   has_many :assigned_issues,          dependent: :nullify, foreign_key: :assignee_id, class_name: "Issue"
   has_many :assigned_merge_requests,  dependent: :nullify, foreign_key: :assignee_id, class_name: "MergeRequest"
 
+  # Issues that a user owns are expected to be moved to the "ghost" user before
+  # the user is destroyed. If the user owns any issues during deletion, this
+  # should be treated as an exceptional condition.
+  has_many :issues,                   dependent: :restrict_with_exception, foreign_key: :author_id
+
   #
   # Validations
   #
   # Note: devise :validatable above adds validations for :email and :password
   validates :name, presence: true
-  validates_confirmation_of :email
+  validates :email, confirmation: true
   validates :notification_email, presence: true
   validates :notification_email, email: true, if: ->(user) { user.notification_email != user.email }
   validates :public_email, presence: true, uniqueness: true, email: true, allow_blank: true
@@ -120,6 +124,7 @@ class User < ActiveRecord::Base
   validate :unique_email, if: ->(user) { user.email_changed? }
   validate :owns_notification_email, if: ->(user) { user.notification_email_changed? }
   validate :owns_public_email, if: ->(user) { user.public_email_changed? }
+  validate :ghost_users_must_be_blocked
   validates :avatar, file_size: { maximum: 200.kilobytes.to_i }
 
   before_validation :generate_password, on: :create
@@ -334,9 +339,15 @@ class User < ActiveRecord::Base
     def reference_pattern
       %r{
         #{Regexp.escape(reference_prefix)}
-        (?<user>#{Gitlab::Regex::NAMESPACE_REF_REGEX_STR})
+        (?<user>#{Gitlab::Regex::FULL_NAMESPACE_REGEX_STR})
       }x
     end
+
+    # Return (create if necessary) the ghost user. The ghost user
+    # owns records previously belonging to deleted users.
+    def ghost
+      User.find_by_ghost(true) || create_ghost_user
+    end
   end
 
   #
@@ -435,6 +446,12 @@ class User < ActiveRecord::Base
     errors.add(:public_email, "is not an email you own") unless all_emails.include?(public_email)
   end
 
+  def ghost_users_must_be_blocked
+    if ghost? && !blocked?
+      errors.add(:ghost, 'cannot be enabled for a user who is not blocked.')
+    end
+  end
+
   def update_emails_with_primary_email
     primary_email_record = emails.find_by(email: email)
     if primary_email_record
@@ -580,8 +597,8 @@ class User < ActiveRecord::Base
 
       if project.repository.branch_exists?(event.branch_name)
         merge_requests = MergeRequest.where("created_at >= ?", event.created_at).
-            where(source_project_id: project.id,
-                  source_branch: event.branch_name)
+          where(source_project_id: project.id,
+                source_branch: event.branch_name)
         merge_requests.empty?
       end
     end
@@ -999,4 +1016,40 @@ class User < ActiveRecord::Base
       super
     end
   end
+
+  def self.create_ghost_user
+    # Since we only want a single ghost user in an instance, we use an
+    # exclusive lease to ensure than this block is never run concurrently.
+    lease_key = "ghost_user_creation"
+    lease = Gitlab::ExclusiveLease.new(lease_key, timeout: 1.minute.to_i)
+
+    until uuid = lease.try_obtain
+      # Keep trying until we obtain the lease. To prevent hammering Redis too
+      # much we'll wait for a bit between retries.
+      sleep(1)
+    end
+
+    # Recheck if a ghost user is already present. One might have been
+    # added between the time we last checked (first line of this method)
+    # and the time we acquired the lock.
+    ghost_user = User.find_by_ghost(true)
+    return ghost_user if ghost_user.present?
+
+    uniquify = Uniquify.new
+
+    username = uniquify.string("ghost") { |s| User.find_by_username(s) }
+
+    email = uniquify.string(-> (n) { "ghost#{n}@example.com" }) do |s|
+      User.find_by_email(s)
+    end
+
+    bio = 'This is a "Ghost User", created to hold all issues authored by users that have since been deleted. This user cannot be removed.'
+
+    User.create(
+      username: username, password: Devise.friendly_token, bio: bio,
+      email: email, name: "Ghost User", state: :blocked, ghost: true
+    )
+  ensure
+    Gitlab::ExclusiveLease.cancel(lease_key, uuid)
+  end
 end
diff --git a/app/policies/base_policy.rb b/app/policies/base_policy.rb
index b9f1c29c32e..e07b144355a 100644
--- a/app/policies/base_policy.rb
+++ b/app/policies/base_policy.rb
@@ -6,9 +6,7 @@ class BasePolicy
       @cannot_set = cannot_set
     end
 
-    def size
-      to_set.size
-    end
+    delegate :size, to: :to_set
 
     def self.empty
       new(Set.new, Set.new)
diff --git a/app/policies/user_policy.rb b/app/policies/user_policy.rb
index 03a2499e263..229846e368c 100644
--- a/app/policies/user_policy.rb
+++ b/app/policies/user_policy.rb
@@ -3,6 +3,14 @@ class UserPolicy < BasePolicy
 
   def rules
     can! :read_user if @user || !restricted_public_level?
+
+    if @user
+      if @user.admin? || @subject == @user
+        can! :destroy_user
+      end
+
+      cannot! :destroy_user if @subject.ghost?
+    end
   end
 
   def restricted_public_level?
diff --git a/app/services/auth/container_registry_authentication_service.rb b/app/services/auth/container_registry_authentication_service.rb
index 5cb7a86a5ee..db82b8f6c30 100644
--- a/app/services/auth/container_registry_authentication_service.rb
+++ b/app/services/auth/container_registry_authentication_service.rb
@@ -2,7 +2,7 @@ module Auth
   class ContainerRegistryAuthenticationService < BaseService
     include Gitlab::CurrentSettings
 
-    AUDIENCE = 'container_registry'
+    AUDIENCE = 'container_registry'.freeze
 
     def execute(authentication_abilities:)
       @authentication_abilities = authentication_abilities
diff --git a/app/services/base_service.rb b/app/services/base_service.rb
index fa45506317e..745c2c4b681 100644
--- a/app/services/base_service.rb
+++ b/app/services/base_service.rb
@@ -28,9 +28,7 @@ class BaseService
     SystemHooksService.new
   end
 
-  def repository
-    project.repository
-  end
+  delegate :repository, to: :project
 
   # Add an error to the specified model for restricted visibility levels
   def deny_visibility_level(model, denied_visibility_level = nil)
diff --git a/app/services/ci/create_pipeline_builds_service.rb b/app/services/ci/create_pipeline_builds_service.rb
index b7da3f8e7eb..70fb2c5e38f 100644
--- a/app/services/ci/create_pipeline_builds_service.rb
+++ b/app/services/ci/create_pipeline_builds_service.rb
@@ -10,9 +10,7 @@ module Ci
       end
     end
 
-    def project
-      pipeline.project
-    end
+    delegate :project, to: :pipeline
 
     private
 
diff --git a/app/services/ci/retry_build_service.rb b/app/services/ci/retry_build_service.rb
index 4b47ee489cf..38ef323f6e5 100644
--- a/app/services/ci/retry_build_service.rb
+++ b/app/services/ci/retry_build_service.rb
@@ -1,16 +1,17 @@
 module Ci
   class RetryBuildService < ::BaseService
-    CLONE_ATTRIBUTES = %i[pipeline ref tag options commands tag_list name
+    CLONE_ATTRIBUTES = %i[pipeline project ref tag options commands name
                           allow_failure stage stage_idx trigger_request
                           yaml_variables when environment coverage_regex]
                             .freeze
 
     REJECT_ATTRIBUTES = %i[id status user token coverage trace runner
-                           artifacts_file artifacts_metadata artifacts_size
+                           artifacts_expire_at artifacts_file
+                           artifacts_metadata artifacts_size
                            created_at updated_at started_at finished_at
                            queued_at erased_by erased_at].freeze
 
-    IGNORE_ATTRIBUTES = %i[trace type lock_version project target_url
+    IGNORE_ATTRIBUTES = %i[type lock_version gl_project_id target_url
                            deploy job_id description].freeze
 
     def execute(build)
diff --git a/app/services/ci/retry_pipeline_service.rb b/app/services/ci/retry_pipeline_service.rb
index 2c5e130e5aa..574561adc4c 100644
--- a/app/services/ci/retry_pipeline_service.rb
+++ b/app/services/ci/retry_pipeline_service.rb
@@ -1,5 +1,7 @@
 module Ci
   class RetryPipelineService < ::BaseService
+    include Gitlab::OptimisticLocking
+
     def execute(pipeline)
       unless can?(current_user, :update_pipeline, pipeline)
         raise Gitlab::Access::AccessDeniedError
@@ -12,6 +14,10 @@ module Ci
           .reprocess(build)
       end
 
+      pipeline.builds.skipped.find_each do |skipped|
+        retry_optimistic_lock(skipped) { |build| build.process }
+      end
+
       MergeRequests::AddTodoWhenBuildFailsService
         .new(project, current_user)
         .close_all(pipeline)
diff --git a/app/services/create_branch_service.rb b/app/services/create_branch_service.rb
index 77459d8779d..b07338d500a 100644
--- a/app/services/create_branch_service.rb
+++ b/app/services/create_branch_service.rb
@@ -1,5 +1,7 @@
 class CreateBranchService < BaseService
   def execute(branch_name, ref)
+    create_master_branch if project.empty_repo?
+
     result = ValidateNewBranchService.new(project, current_user)
       .execute(branch_name)
 
@@ -19,4 +21,16 @@ class CreateBranchService < BaseService
   def success(branch)
     super().merge(branch: branch)
   end
+
+  private
+
+  def create_master_branch
+    project.repository.commit_file(
+      current_user,
+      '/README.md',
+      '',
+      message: 'Add README.md',
+      branch_name: 'master',
+      update: false)
+  end
 end
diff --git a/app/services/files/create_dir_service.rb b/app/services/files/create_dir_service.rb
index 858de5f0538..083ffdc634c 100644
--- a/app/services/files/create_dir_service.rb
+++ b/app/services/files/create_dir_service.rb
@@ -1,7 +1,7 @@
 module Files
   class CreateDirService < Files::BaseService
     def commit
-      repository.commit_dir(
+      repository.create_dir(
         current_user,
         @file_path,
         message: @commit_message,
diff --git a/app/services/files/create_service.rb b/app/services/files/create_service.rb
index 88dd7bbaedb..65b5537fb68 100644
--- a/app/services/files/create_service.rb
+++ b/app/services/files/create_service.rb
@@ -1,13 +1,12 @@
 module Files
   class CreateService < Files::BaseService
     def commit
-      repository.commit_file(
+      repository.create_file(
         current_user,
         @file_path,
         @file_content,
         message: @commit_message,
         branch_name: @target_branch,
-        update: false,
         author_email: @author_email,
         author_name: @author_name,
         start_project: @start_project,
@@ -17,6 +16,10 @@ module Files
     def validate
       super
 
+      if @file_content.nil?
+        raise_error("You must provide content.")
+      end
+
       if @file_path =~ Gitlab::Regex.directory_traversal_regex
         raise_error(
           'Your changes could not be committed, because the file name ' +
diff --git a/app/services/files/destroy_service.rb b/app/services/files/destroy_service.rb
index c3be806a42d..e294659bc98 100644
--- a/app/services/files/destroy_service.rb
+++ b/app/services/files/destroy_service.rb
@@ -1,7 +1,7 @@
 module Files
   class DestroyService < Files::BaseService
     def commit
-      repository.remove_file(
+      repository.delete_file(
         current_user,
         @file_path,
         message: @commit_message,
diff --git a/app/services/files/multi_service.rb b/app/services/files/multi_service.rb
index af6da5b9d56..0609c6219e7 100644
--- a/app/services/files/multi_service.rb
+++ b/app/services/files/multi_service.rb
@@ -2,6 +2,8 @@ module Files
   class MultiService < Files::BaseService
     class FileChangedError < StandardError; end
 
+    ACTIONS = %w[create update delete move].freeze
+
     def commit
       repository.multi_action(
         user: current_user,
@@ -21,10 +23,19 @@ module Files
       super
 
       params[:actions].each_with_index do |action, index|
+        if ACTIONS.include?(action[:action].to_s)
+          action[:action] = action[:action].to_sym
+        else
+          raise_error("Unknown action type `#{action[:action]}`.")
+        end
+
         unless action[:file_path].present?
           raise_error("You must specify a file_path.")
         end
 
+        action[:file_path].slice!(0) if action[:file_path] && action[:file_path].start_with?('/')
+        action[:previous_path].slice!(0) if action[:previous_path] && action[:previous_path].start_with?('/')
+
         regex_check(action[:file_path])
         regex_check(action[:previous_path]) if action[:previous_path]
 
@@ -43,8 +54,6 @@ module Files
           validate_delete(action)
         when :move
           validate_move(action, index)
-        else
-          raise_error("Unknown action type `#{action[:action]}`.")
         end
       end
     end
@@ -92,6 +101,20 @@ module Files
       if repository.blob_at_branch(params[:branch], action[:file_path])
         raise_error("Your changes could not be committed because a file with the name `#{action[:file_path]}` already exists.")
       end
+
+      if action[:content].nil?
+        raise_error("You must provide content.")
+      end
+    end
+
+    def validate_update(action)
+      if action[:content].nil?
+        raise_error("You must provide content.")
+      end
+
+      if file_has_changed?
+        raise FileChangedError.new("You are attempting to update a file `#{action[:file_path]}` that has changed since you started editing it.")
+      end
     end
 
     def validate_delete(action)
@@ -114,11 +137,5 @@ module Files
         params[:actions][index][:content] = blob.data
       end
     end
-
-    def validate_update(action)
-      if file_has_changed?
-        raise FileChangedError.new("You are attempting to update a file `#{action[:file_path]}` that has changed since you started editing it.")
-      end
-    end
   end
 end
diff --git a/app/services/files/update_service.rb b/app/services/files/update_service.rb
index a71fe61a4b6..54e1aaf3f67 100644
--- a/app/services/files/update_service.rb
+++ b/app/services/files/update_service.rb
@@ -18,6 +18,10 @@ module Files
     def validate
       super
 
+      if @file_content.nil?
+        raise_error("You must provide content.")
+      end
+
       if file_has_changed?
         raise FileChangedError.new("You are attempting to update a file that has changed since you started editing it.")
       end
diff --git a/app/services/members/destroy_service.rb b/app/services/members/destroy_service.rb
index 431da8372c9..2e089149ca8 100644
--- a/app/services/members/destroy_service.rb
+++ b/app/services/members/destroy_service.rb
@@ -4,7 +4,7 @@ module Members
 
     attr_accessor :source
 
-    ALLOWED_SCOPES = %i[members requesters all]
+    ALLOWED_SCOPES = %i[members requesters all].freeze
 
     def initialize(source, current_user, params = {})
       @source = source
diff --git a/app/services/notes/slash_commands_service.rb b/app/services/notes/slash_commands_service.rb
index 56913568cae..ad1e6f6774a 100644
--- a/app/services/notes/slash_commands_service.rb
+++ b/app/services/notes/slash_commands_service.rb
@@ -3,7 +3,7 @@ module Notes
     UPDATE_SERVICES = {
       'Issue' => Issues::UpdateService,
       'MergeRequest' => MergeRequests::UpdateService
-    }
+    }.freeze
 
     def self.noteable_update_service(note)
       UPDATE_SERVICES[note.noteable_type]
diff --git a/app/services/projects/destroy_service.rb b/app/services/projects/destroy_service.rb
index 9716a1780a9..2e06826c311 100644
--- a/app/services/projects/destroy_service.rb
+++ b/app/services/projects/destroy_service.rb
@@ -4,7 +4,7 @@ module Projects
 
     class DestroyError < StandardError; end
 
-    DELETED_FLAG = '+deleted'
+    DELETED_FLAG = '+deleted'.freeze
 
     def async_execute
       project.transaction do
diff --git a/app/services/projects/download_service.rb b/app/services/projects/download_service.rb
index f06a3d44c17..604747e39d0 100644
--- a/app/services/projects/download_service.rb
+++ b/app/services/projects/download_service.rb
@@ -2,7 +2,7 @@ module Projects
   class DownloadService < BaseService
     WHITELIST = [
       /^[^.]+\.fogbugz.com$/
-    ]
+    ].freeze
 
     def initialize(project, url)
       @project, @url = project, url
@@ -25,7 +25,7 @@ module Projects
     end
 
     def http?(url)
-      url =~ /\A#{URI::regexp(['http', 'https'])}\z/
+      url =~ /\A#{URI.regexp(%w(http https))}\z/
     end
 
     def valid_domain?(url)
diff --git a/app/services/projects/update_pages_service.rb b/app/services/projects/update_pages_service.rb
index f5f9ee88912..2d42c4fc04a 100644
--- a/app/services/projects/update_pages_service.rb
+++ b/app/services/projects/update_pages_service.rb
@@ -2,7 +2,7 @@ module Projects
   class UpdatePagesService < BaseService
     BLOCK_SIZE = 32.kilobytes
     MAX_SIZE = 1.terabyte
-    SITE_PATH = 'public/'
+    SITE_PATH = 'public/'.freeze
 
     attr_reader :build
 
diff --git a/app/services/protected_branches/api_update_service.rb b/app/services/protected_branches/api_update_service.rb
index 050cb3b738b..bdb0e0cc8bf 100644
--- a/app/services/protected_branches/api_update_service.rb
+++ b/app/services/protected_branches/api_update_service.rb
@@ -15,16 +15,16 @@ module ProtectedBranches
 
         case @developers_can_push
         when true
-          params.merge!(push_access_levels_attributes: [{ access_level: Gitlab::Access::DEVELOPER }])
+          params[:push_access_levels_attributes] = [{ access_level: Gitlab::Access::DEVELOPER }]
         when false
-          params.merge!(push_access_levels_attributes: [{ access_level: Gitlab::Access::MASTER }])
+          params[:push_access_levels_attributes] = [{ access_level: Gitlab::Access::MASTER }]
         end
 
         case @developers_can_merge
         when true
-          params.merge!(merge_access_levels_attributes: [{ access_level: Gitlab::Access::DEVELOPER }])
+          params[:merge_access_levels_attributes] = [{ access_level: Gitlab::Access::DEVELOPER }]
         when false
-          params.merge!(merge_access_levels_attributes: [{ access_level: Gitlab::Access::MASTER }])
+          params[:merge_access_levels_attributes] = [{ access_level: Gitlab::Access::MASTER }]
         end
 
         service = ProtectedBranches::UpdateService.new(@project, @current_user, @params)
diff --git a/app/services/system_hooks_service.rb b/app/services/system_hooks_service.rb
index a2bfa422c9d..9b6dd013e3a 100644
--- a/app/services/system_hooks_service.rb
+++ b/app/services/system_hooks_service.rb
@@ -33,9 +33,7 @@ class SystemHooksService
       data.merge!(project_data(model))
 
       if event == :rename || event == :transfer
-        data.merge!({
-          old_path_with_namespace: model.old_path_with_namespace
-        })
+        data[:old_path_with_namespace] = model.old_path_with_namespace
       end
 
       data
diff --git a/app/services/system_note_service.rb b/app/services/system_note_service.rb
index 87ba72cf991..55b548a12f9 100644
--- a/app/services/system_note_service.rb
+++ b/app/services/system_note_service.rb
@@ -356,10 +356,10 @@ module SystemNoteService
       note:    cross_reference_note_content(gfm_reference)
     }
 
-    if noteable.kind_of?(Commit)
+    if noteable.is_a?(Commit)
       note_options.merge!(noteable_type: 'Commit', commit_id: noteable.id)
     else
-      note_options.merge!(noteable: noteable)
+      note_options[:noteable] = noteable
     end
 
     if noteable.is_a?(ExternalIssue)
@@ -408,12 +408,13 @@ module SystemNoteService
     # Initial scope should be system notes of this noteable type
     notes = Note.system.where(noteable_type: noteable.class)
 
-    if noteable.is_a?(Commit)
-      # Commits have non-integer IDs, so they're stored in `commit_id`
-      notes = notes.where(commit_id: noteable.id)
-    else
-      notes = notes.where(noteable_id: noteable.id)
-    end
+    notes =
+      if noteable.is_a?(Commit)
+        # Commits have non-integer IDs, so they're stored in `commit_id`
+        notes.where(commit_id: noteable.id)
+      else
+        notes.where(noteable_id: noteable.id)
+      end
 
     notes_for_mentioner(mentioner, noteable, notes).exists?
   end
diff --git a/app/services/users/destroy_service.rb b/app/services/users/destroy_service.rb
index bc0653cb634..833da5bc5d1 100644
--- a/app/services/users/destroy_service.rb
+++ b/app/services/users/destroy_service.rb
@@ -7,7 +7,7 @@ module Users
     end
 
     def execute(user, options = {})
-      unless current_user.admin? || current_user == user
+      unless Ability.allowed?(current_user, :destroy_user, user)
         raise Gitlab::Access::AccessDeniedError, "#{current_user} tried to destroy user #{user}!"
       end
 
@@ -26,6 +26,8 @@ module Users
         ::Projects::DestroyService.new(project, current_user, skip_repo: true).async_execute
       end
 
+      move_issues_to_ghost_user(user)
+
       # Destroy the namespace after destroying the user since certain methods may depend on the namespace existing
       namespace = user.namespace
       user_data = user.destroy
@@ -33,5 +35,22 @@ module Users
 
       user_data
     end
+
+    private
+
+    def move_issues_to_ghost_user(user)
+      # Block the user before moving issues to prevent a data race.
+      # If the user creates an issue after `move_issues_to_ghost_user`
+      # runs and before the user is destroyed, the destroy will fail with
+      # an exception. We block the user so that issues can't be created
+      # after `move_issues_to_ghost_user` runs and before the destroy happens.
+      user.block
+
+      ghost_user = User.ghost
+
+      user.issues.update_all(author_id: ghost_user.id)
+
+      user.reload
+    end
   end
 end
diff --git a/app/uploaders/uploader_helper.rb b/app/uploaders/uploader_helper.rb
index 35fd1ed23f8..bee311583ea 100644
--- a/app/uploaders/uploader_helper.rb
+++ b/app/uploaders/uploader_helper.rb
@@ -1,15 +1,15 @@
 # Extra methods for uploader
 module UploaderHelper
-  IMAGE_EXT = %w[png jpg jpeg gif bmp tiff]
+  IMAGE_EXT = %w[png jpg jpeg gif bmp tiff].freeze
   # We recommend using the .mp4 format over .mov. Videos in .mov format can
   # still be used but you really need to make sure they are served with the
   # proper MIME type video/mp4 and not video/quicktime or your videos won't play
   # on IE >= 9.
   # http://archive.sublimevideo.info/20150912/docs.sublimevideo.net/troubleshooting.html
-  VIDEO_EXT = %w[mp4 m4v mov webm ogv]
+  VIDEO_EXT = %w[mp4 m4v mov webm ogv].freeze
   # These extension types can contain dangerous code and should only be embedded inline with
   # proper filtering. They should always be tagged as "Content-Disposition: attachment", not "inline".
-  DANGEROUS_EXT = %w[svg]
+  DANGEROUS_EXT = %w[svg].freeze
 
   def image?
     extension_match?(IMAGE_EXT)
diff --git a/app/validators/addressable_url_validator.rb b/app/validators/addressable_url_validator.rb
index 09bfa613cbe..94542125d43 100644
--- a/app/validators/addressable_url_validator.rb
+++ b/app/validators/addressable_url_validator.rb
@@ -18,7 +18,7 @@
 #   end
 #
 class AddressableUrlValidator < ActiveModel::EachValidator
-  DEFAULT_OPTIONS = { protocols: %w(http https ssh git) }
+  DEFAULT_OPTIONS = { protocols: %w(http https ssh git) }.freeze
 
   def validate_each(record, attribute, value)
     unless valid_url?(value)
diff --git a/app/validators/duration_validator.rb b/app/validators/duration_validator.rb
new file mode 100644
index 00000000000..10ff44031c6
--- /dev/null
+++ b/app/validators/duration_validator.rb
@@ -0,0 +1,17 @@
+# DurationValidator
+#
+# Validate the format conforms with ChronicDuration
+#
+# Example:
+#
+#   class ApplicationSetting < ActiveRecord::Base
+#     validates :default_artifacts_expire_in, presence: true, duration: true
+#   end
+#
+class DurationValidator < ActiveModel::EachValidator
+  def validate_each(record, attribute, value)
+    ChronicDuration.parse(value)
+  rescue ChronicDuration::DurationParseError
+    record.errors.add(attribute, "is not a correct duration")
+  end
+end
diff --git a/app/views/admin/application_settings/_form.html.haml b/app/views/admin/application_settings/_form.html.haml
index 749c74b8110..057b584e1bc 100644
--- a/app/views/admin/application_settings/_form.html.haml
+++ b/app/views/admin/application_settings/_form.html.haml
@@ -212,8 +212,16 @@
       .col-sm-10
         = f.number_field :max_artifacts_size, class: 'form-control'
         .help-block
-          Set the maximum file size each jobs's artifacts can have
-          = link_to "(?)", help_page_path("user/admin_area/settings/continuous_integration", anchor: "maximum-artifacts-size")
+          Set the maximum file size for each job's artifacts
+          = link_to icon('question-circle'), help_page_path('user/admin_area/settings/continuous_integration', anchor: 'maximum-artifacts-size')
+    .form-group
+      = f.label :default_artifacts_expire_in, 'Default artifacts expiration', class: 'control-label col-sm-2'
+      .col-sm-10
+        = f.text_field :default_artifacts_expire_in, class: 'form-control'
+        .help-block
+          Set the default expiration time for each job's artifacts.
+          0 for unlimited.
+          = link_to icon('question-circle'), help_page_path('user/admin_area/settings/continuous_integration', anchor: 'default-artifacts-expiration')
 
   - if Gitlab.config.registry.enabled
     %fieldset
diff --git a/app/views/admin/users/_user.html.haml b/app/views/admin/users/_user.html.haml
index 3b5c713ac2d..a756cb7243a 100644
--- a/app/views/admin/users/_user.html.haml
+++ b/app/views/admin/users/_user.html.haml
@@ -34,7 +34,7 @@
             - if user.access_locked?
               %li
                 = link_to 'Unlock', unlock_admin_user_path(user), method: :put, class: 'btn-grouped btn btn-xs btn-success', data: { confirm: 'Are you sure?' }
-          - if user.can_be_removed?
+          - if user.can_be_removed? && can?(current_user, :destroy_user, @user)
             %li.divider
             %li
               = link_to 'Delete User', [:admin, user], data: { confirm: "USER #{user.name} WILL BE REMOVED! All issues, merge requests and groups linked to this user will also be removed! Consider cancelling this deletion and blocking the user instead. Are you sure?" },
diff --git a/app/views/admin/users/show.html.haml b/app/views/admin/users/show.html.haml
index 76b1291fe10..840d843f069 100644
--- a/app/views/admin/users/show.html.haml
+++ b/app/views/admin/users/show.html.haml
@@ -173,7 +173,7 @@
         .panel-heading
           Remove user
         .panel-body
-          - if @user.can_be_removed?
+          - if @user.can_be_removed? && can?(current_user, :destroy_user, @user)
             %p Deleting a user has the following effects:
             %ul
               %li All user content like authored issues, snippets, comments will be removed
@@ -189,3 +189,6 @@
                 %strong= @user.solo_owned_groups.map(&:name).join(', ')
               %p
                 You must transfer ownership or delete these groups before you can delete this user.
+            - else
+              %p
+                You don't have access to delete this user.
diff --git a/app/views/dashboard/projects/index.html.haml b/app/views/dashboard/projects/index.html.haml
index 4f36a4a1c73..b82b933c3ad 100644
--- a/app/views/dashboard/projects/index.html.haml
+++ b/app/views/dashboard/projects/index.html.haml
@@ -5,6 +5,8 @@
 - page_title    "Projects"
 - header_title  "Projects", dashboard_projects_path
 
+.user-callout{ 'callout-svg' => custom_icon('icon_customization') }
+
 - if @projects.any? || params[:filter_projects]
   = render 'dashboard/projects_head'
 
diff --git a/app/views/devise/shared/_signup_box.html.haml b/app/views/devise/shared/_signup_box.html.haml
index 5a44ec45b7b..30e63d991bb 100644
--- a/app/views/devise/shared/_signup_box.html.haml
+++ b/app/views/devise/shared/_signup_box.html.haml
@@ -8,7 +8,7 @@
         = f.text_field :name, class: "form-control top", required: true, title: "This field is required."
       .username.form-group
         = f.label :username
-        = f.text_field :username, class: "form-control middle", pattern: Gitlab::Regex::NAMESPACE_REGEX_STR_SIMPLE, required: true, title: 'Please create a username with only alphanumeric characters.'
+        = f.text_field :username, class: "form-control middle", pattern: Gitlab::Regex::NAMESPACE_REGEX_STR_JS, required: true, title: 'Please create a username with only alphanumeric characters.'
         %p.validation-error.hide Username is already taken.
         %p.validation-success.hide Username is available.
         %p.validation-pending.hide Checking username availability...
diff --git a/app/views/layouts/nav/_admin.html.haml b/app/views/layouts/nav/_admin.html.haml
index 19a947af4ca..d068c895fa3 100644
--- a/app/views/layouts/nav/_admin.html.haml
+++ b/app/views/layouts/nav/_admin.html.haml
@@ -33,7 +33,7 @@
           Abuse Reports
           %span.badge.count= number_with_delimiter(AbuseReport.count(:all))
 
-    - if askimet_enabled?
+    - if akismet_enabled?
       = nav_link(controller: :spam_logs) do
         = link_to admin_spam_logs_path, title: "Spam Logs" do
           %span
diff --git a/app/views/profiles/accounts/show.html.haml b/app/views/profiles/accounts/show.html.haml
index a4f4079d556..02fb47ec981 100644
--- a/app/views/profiles/accounts/show.html.haml
+++ b/app/views/profiles/accounts/show.html.haml
@@ -115,7 +115,7 @@
       %h4.prepend-top-0.danger-title
         Remove account
     .col-lg-9
-      - if @user.can_be_removed?
+      - if @user.can_be_removed? && can?(current_user, :destroy_user, @user)
         %p
           Deleting an account has the following effects:
         %ul
@@ -131,4 +131,7 @@
             %strong= @user.solo_owned_groups.map(&:name).join(', ')
           %p
             You must transfer ownership or delete these groups before you can delete your account.
+        - else
+          %p
+            You don't have access to delete this user.
 .append-bottom-default
diff --git a/app/views/profiles/personal_access_tokens/index.html.haml b/app/views/profiles/personal_access_tokens/index.html.haml
index b10f5fc08e2..903b957c26b 100644
--- a/app/views/profiles/personal_access_tokens/index.html.haml
+++ b/app/views/profiles/personal_access_tokens/index.html.haml
@@ -101,5 +101,3 @@
   $("#created-personal-access-token").click(function() {
     this.select();
   });
-
-  $("#created-personal-access-token").effect('highlight', { color: '#ffff99' }, 2000);
diff --git a/app/views/projects/blob/diff.html.haml b/app/views/projects/blob/diff.html.haml
index d1f7f65bf53..c48d9dd982c 100644
--- a/app/views/projects/blob/diff.html.haml
+++ b/app/views/projects/blob/diff.html.haml
@@ -19,10 +19,10 @@
         = line_content
       - when :parallel
         %td.old_line.diff-line-num{ data: { linenumber: line_old } }
-          = link_to raw(line_old), "##{line_old}"
+          %a{ href: "##{line_old}", data: { linenumber: line_old } }
         = line_content
         %td.new_line.diff-line-num{ data: { linenumber: line_new } }
-          = link_to raw(line_new), "##{line_new}"
+          %a{ href: "##{line_new}", data: { linenumber: line_new } }
         = line_content
 
   - if @form.unfold? && @form.bottom? && @form.to < @blob.lines.size
diff --git a/app/views/projects/boards/_show.html.haml b/app/views/projects/boards/_show.html.haml
index f5ca9607823..b3bc6010efb 100644
--- a/app/views/projects/boards/_show.html.haml
+++ b/app/views/projects/boards/_show.html.haml
@@ -8,7 +8,6 @@
 
   %script#js-board-template{ type: "text/x-template" }= render "projects/boards/components/board"
   %script#js-board-list-template{ type: "text/x-template" }= render "projects/boards/components/board_list"
-  %script#js-board-list-card{ type: "text/x-template" }= render "projects/boards/components/card"
 
 = render "projects/issues/head"
 
diff --git a/app/views/projects/boards/components/_card.html.haml b/app/views/projects/boards/components/_card.html.haml
deleted file mode 100644
index 891c2c46251..00000000000
--- a/app/views/projects/boards/components/_card.html.haml
+++ /dev/null
@@ -1,10 +0,0 @@
-%li.card{ ":class" => '{ "user-can-drag": !disabled && issue.id, "is-disabled": disabled || !issue.id, "is-active": issueDetailVisible }',
-  ":index" => "index",
-  ":data-issue-id" => "issue.id",
-  "@mousedown" => "mouseDown",
-  "@mousemove" => "mouseMove",
-  "@mouseup" => "showIssue($event)" }
-  %issue-card-inner{ ":list" => "list",
-    ":issue" => "issue",
-    ":issue-link-base" => "issueLinkBase",
-    ":root-path" => "rootPath" }
diff --git a/app/views/projects/branches/_branch.html.haml b/app/views/projects/branches/_branch.html.haml
index 19ffe73a08d..ae63f8184df 100644
--- a/app/views/projects/branches/_branch.html.haml
+++ b/app/views/projects/branches/_branch.html.haml
@@ -31,7 +31,7 @@
 
       - if can?(current_user, :push_code, @project)
         = link_to namespace_project_branch_path(@project.namespace, @project, branch.name),
-          class: "btn btn-remove remove-row #{can_remove_branch?(@project, branch.name) ? '' : 'disabled'}",
+          class: "btn btn-remove remove-row js-ajax-loading-spinner #{can_remove_branch?(@project, branch.name) ? '' : 'disabled'}",
           method: :delete,
           data: { confirm: "Deleting the '#{branch.name}' branch cannot be undone. Are you sure?" },
           remote: true,
diff --git a/app/views/projects/branches/new.html.haml b/app/views/projects/branches/new.html.haml
index e63bdb38bd8..d3c3e40d518 100644
--- a/app/views/projects/branches/new.html.haml
+++ b/app/views/projects/branches/new.html.haml
@@ -12,12 +12,16 @@
   .form-group
     = label_tag :branch_name, nil, class: 'control-label'
     .col-sm-10
-      = text_field_tag :branch_name, params[:branch_name], required: true, tabindex: 1, autofocus: true, class: 'form-control js-branch-name'
+      = text_field_tag :branch_name, params[:branch_name], required: true, autofocus: true, class: 'form-control js-branch-name'
       .help-block.text-danger.js-branch-name-error
   .form-group
     = label_tag :ref, 'Create from', class: 'control-label'
     .col-sm-10
-      = text_field_tag :ref, params[:ref] || @project.default_branch, required: true, tabindex: 2, class: 'form-control'
+      = hidden_field_tag :ref, params[:ref] || @project.default_branch
+      = dropdown_tag(params[:ref] || @project.default_branch,
+                     options: { toggle_class: 'js-branch-select wide',
+                                filter: true, dropdown_class: "dropdown-menu-selectable", placeholder: "Search branches",
+                                data: { selected: params[:ref] || @project.default_branch, field_name: 'ref' } })
       .help-block Existing branch name, tag, or commit SHA
   .form-actions
     = button_tag 'Create branch', class: 'btn btn-create', tabindex: 3
diff --git a/app/views/projects/diffs/_file_header.html.haml b/app/views/projects/diffs/_file_header.html.haml
index 1dbfe830d52..f809c52c367 100644
--- a/app/views/projects/diffs/_file_header.html.haml
+++ b/app/views/projects/diffs/_file_header.html.haml
@@ -10,10 +10,10 @@
 
     - if diff_file.renamed_file
       - old_path, new_path = mark_inline_diffs(diff_file.old_path, diff_file.new_path)
-      %strong.file-title-name.has-tooltip{ data: { title: old_path, container: 'body' } }
+      %strong.file-title-name.has-tooltip{ data: { title: diff_file.old_path, container: 'body' } }
         = old_path
       &rarr;
-      %strong.file-title-name.has-tooltip{ data: { title: new_path, container: 'body' } }
+      %strong.file-title-name.has-tooltip{ data: { title: diff_file.new_path, container: 'body' } }
         = new_path
     - else
       %strong.file-title-name.has-tooltip{ data: { title: diff_file.new_path, container: 'body' } }
diff --git a/app/views/projects/edit.html.haml b/app/views/projects/edit.html.haml
index b9300efd04f..83ae9fd10ec 100644
--- a/app/views/projects/edit.html.haml
+++ b/app/views/projects/edit.html.haml
@@ -120,7 +120,7 @@
           .form-group
             - if @project.avatar?
               .avatar-container.s160
-                = project_icon("#{@project.namespace.to_param}/#{@project.to_param}", alt: '', class: 'avatar project-avatar s160')
+                = project_icon(@project.full_path, alt: '', class: 'avatar project-avatar s160')
             %p.light
               - if @project.avatar_in_git
                 Project avatar in repository: #{ @project.avatar_in_git }
diff --git a/app/views/projects/pipelines/index.html.haml b/app/views/projects/pipelines/index.html.haml
index 6e0428e2a31..4147a617d95 100644
--- a/app/views/projects/pipelines/index.html.haml
+++ b/app/views/projects/pipelines/index.html.haml
@@ -5,23 +5,35 @@
 %div{ class: container_class }
   .top-area
     %ul.nav-links
-      %li{ class: active_when(@scope.nil?) }>
+      %li.js-pipelines-tab-all{ class: active_when(@scope.nil?) }>
         = link_to project_pipelines_path(@project) do
           All
           %span.badge.js-totalbuilds-count
             = number_with_delimiter(@pipelines_count)
 
-      %li{ class: active_when(@scope == 'running') }>
+      %li.js-pipelines-tab-pending{ class: active_when(@scope == 'pending') }>
+        = link_to project_pipelines_path(@project, scope: :pending) do
+          Pending
+          %span.badge
+            = number_with_delimiter(@pending_count)
+
+      %li.js-pipelines-tab-running{ class: active_when(@scope == 'running') }>
         = link_to project_pipelines_path(@project, scope: :running) do
           Running
           %span.badge.js-running-count
-            = number_with_delimiter(@running_or_pending_count)
+            = number_with_delimiter(@running_count)
+
+      %li.js-pipelines-tab-finished{ class: active_when(@scope == 'finished') }>
+        = link_to project_pipelines_path(@project, scope: :finished) do
+          Finished
+          %span.badge
+            = number_with_delimiter(@finished_count)
 
-      %li{ class: active_when(@scope == 'branches') }>
+      %li.js-pipelines-tab-branches{ class: active_when(@scope == 'branches') }>
         = link_to project_pipelines_path(@project, scope: :branches) do
           Branches
 
-      %li{ class: active_when(@scope == 'tags') }>
+      %li.js-pipelines-tab-tags{ class: active_when(@scope == 'tags') }>
         = link_to project_pipelines_path(@project, scope: :tags) do
           Tags
 
diff --git a/app/views/projects/pipelines/new.html.haml b/app/views/projects/pipelines/new.html.haml
index 55202725b9e..14a270a3039 100644
--- a/app/views/projects/pipelines/new.html.haml
+++ b/app/views/projects/pipelines/new.html.haml
@@ -9,7 +9,11 @@
   .form-group
     = f.label :ref, 'Create for', class: 'control-label'
     .col-sm-10
-      = f.text_field :ref, required: true, tabindex: 2, class: 'form-control js-branch-name ui-autocomplete-input', autocomplete: :false, id: :ref
+      = hidden_field_tag 'pipeline[ref]', params[:ref] || @project.default_branch
+      = dropdown_tag(params[:ref] || @project.default_branch,
+                     options: { toggle_class: 'js-branch-select wide',
+                                filter: true, dropdown_class: "dropdown-menu-selectable", placeholder: "Search branches",
+                                data: { selected: params[:ref] || @project.default_branch, field_name: 'pipeline[ref]' } })
       .help-block Existing branch name, tag
   .form-actions
     = f.submit 'Create pipeline', class: 'btn btn-create', tabindex: 3
diff --git a/app/views/shared/_group_form.html.haml b/app/views/shared/_group_form.html.haml
index efb207b9916..02b7b2447ed 100644
--- a/app/views/shared/_group_form.html.haml
+++ b/app/views/shared/_group_form.html.haml
@@ -17,7 +17,7 @@
           %strong= parent.full_path + '/'
       = f.text_field :path, placeholder: 'open-source', class: 'form-control',
         autofocus: local_assigns[:autofocus] || false, required: true,
-        pattern: Gitlab::Regex::NAMESPACE_REGEX_STR_SIMPLE,
+        pattern: Gitlab::Regex::NAMESPACE_REGEX_STR_JS,
         title: 'Please choose a group name with no special characters.'
       - if parent
         = f.hidden_field :parent_id, value: parent.id
diff --git a/app/views/shared/icons/_icon_customization.svg b/app/views/shared/icons/_icon_customization.svg
new file mode 100644
index 00000000000..eb1f8ba129b
--- /dev/null
+++ b/app/views/shared/icons/_icon_customization.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 112 90" xmlns:xlink="http://www.w3.org/1999/xlink"><g fill="none" fill-rule="evenodd"><rect width="112" height="90" fill="#fff" rx="6"/><path fill="#eee" fill-rule="nonzero" d="m4 6.01v77.98c0 1.11.899 2.01 2 2.01h100c1.105 0 2-.898 2-2.01v-77.98c0-1.11-.899-2.01-2-2.01h-100c-1.105 0-2 .898-2 2.01m-4 0c0-3.319 2.686-6.01 6-6.01h100c3.315 0 6 2.694 6 6.01v77.98c0 3.319-2.686 6.01-6 6.01h-100c-3.315 0-6-2.694-6-6.01v-77.98"/><g transform="translate(26 35)"><rect width="4" height="39" x="5" fill="#eee" rx="2" id="0"/><rect width="4" height="21" x="5" y="18" fill="#fef0ea" rx="2"/><circle cx="7" cy="13" r="5" fill="#fff"/><path fill="#fb722e" fill-rule="nonzero" d="m7 20c-3.866 0-7-3.134-7-7 0-3.866 3.134-7 7-7 3.866 0 7 3.134 7 7 0 3.866-3.134 7-7 7m0-4c1.657 0 3-1.343 3-3 0-1.657-1.343-3-3-3-1.657 0-3 1.343-3 3 0 1.657 1.343 3 3 3"/></g><g transform="translate(49 35)"><use xlink:href="#0"/><rect width="4" height="21" x="5" y="18" fill="#b5a7dd" rx="2"/><circle cx="7" cy="25" r="5" fill="#fff"/><path fill="#6b4fbb" fill-rule="nonzero" d="m7 32c-3.866 0-7-3.134-7-7 0-3.866 3.134-7 7-7 3.866 0 7 3.134 7 7 0 3.866-3.134 7-7 7m0-4c1.657 0 3-1.343 3-3 0-1.657-1.343-3-3-3-1.657 0-3 1.343-3 3 0 1.657 1.343 3 3 3"/></g><g transform="translate(72 33)"><rect width="4" height="39" x="5" y="2" fill="#eee" rx="2"/><rect width="4" height="34" x="5" y="7" fill="#fef0ea" rx="2"/><circle cx="7" cy="7" r="5" fill="#fff"/><path fill="#fb722e" fill-rule="nonzero" d="m7 14c-3.866 0-7-3.134-7-7 0-3.866 3.134-7 7-7 3.866 0 7 3.134 7 7 0 3.866-3.134 7-7 7m0-4c1.657 0 3-1.343 3-3 0-1.657-1.343-3-3-3-1.657 0-3 1.343-3 3 0 1.657 1.343 3 3 3"/></g><g fill="#6b4fbb"><circle cx="13.5" cy="11.5" r="2.5"/><circle cx="23.5" cy="11.5" r="2.5" opacity=".5"/><circle cx="33.5" cy="11.5" r="2.5" opacity=".5"/></g><path fill="#eee" d="m0 19h111v4h-111z"/></g></svg>
diff --git a/app/views/shared/issuable/_sidebar.html.haml b/app/views/shared/issuable/_sidebar.html.haml
index 3f7f1a86b9f..6c730e16f67 100644
--- a/app/views/shared/issuable/_sidebar.html.haml
+++ b/app/views/shared/issuable/_sidebar.html.haml
@@ -173,7 +173,7 @@
     :javascript
       gl.IssuableResource = new gl.SubbableResource('#{issuable_json_path(issuable)}');
       new gl.IssuableTimeTracking("#{escape_javascript(serialize_issuable(issuable))}");
-      new MilestoneSelect('{"namespace":"#{@project.namespace.path}","path":"#{@project.path}"}');
+      new MilestoneSelect('{"full_path":"#{@project.full_path}"}');
       new LabelsSelect();
       new IssuableContext('#{escape_javascript(current_user.to_json(only: [:username, :id, :name]))}');
       gl.Subscription.bindAll('.subscription');
diff --git a/app/views/users/show.html.haml b/app/views/users/show.html.haml
index dc2fea450bd..c130f3d9e17 100644
--- a/app/views/users/show.html.haml
+++ b/app/views/users/show.html.haml
@@ -98,6 +98,7 @@
           Snippets
 
   %div{ class: container_class }
+    .user-callout{ 'callout-svg' => custom_icon('icon_customization') }
     .tab-content
       #activity.tab-pane
         .row-content-block.calender-block.white.second-block.hidden-xs
diff --git a/app/workers/irker_worker.rb b/app/workers/irker_worker.rb
index 7e44b241743..c9658b3fe17 100644
--- a/app/workers/irker_worker.rb
+++ b/app/workers/irker_worker.rb
@@ -120,8 +120,8 @@ class IrkerWorker
   end
 
   def compare_url(data, repo_path)
-    sha1 = Commit::truncate_sha(data['before'])
-    sha2 = Commit::truncate_sha(data['after'])
+    sha1 = Commit.truncate_sha(data['before'])
+    sha2 = Commit.truncate_sha(data['after'])
     compare_url = "#{Gitlab.config.gitlab.url}/#{repo_path}/compare"
     compare_url += "/#{sha1}...#{sha2}"
     colorize_url compare_url
@@ -129,7 +129,7 @@ class IrkerWorker
 
   def send_one_commit(project, hook_attrs, repo_name, branch)
     commit = commit_from_id project, hook_attrs['id']
-    sha = colorize_sha Commit::truncate_sha(hook_attrs['id'])
+    sha = colorize_sha Commit.truncate_sha(hook_attrs['id'])
     author = hook_attrs['author']['name']
     files = colorize_nb_files(files_count commit)
     title = commit.title