Merge remote-tracking branch 'upstream/master' into pipeline-emailspipeline-emails

* upstream/master: (58 commits)
  Update endpoint to username validator
  change border color to variable
  Add todo for deprecated user routes and more information about deprecation to changelog
  Provide better error message to the user
  Apply better hierarchy to markdown headers and issue/mr titles
  Swapped button text manipulation outcomes for the toggle query
  Fixed find file keyboard navigation
  Update CHANGELOG for 8.12.7
  Added download-button class and applied button margin
  Enable activerecord_sane_schema_dumper for test
  Updated logo from @luke
  Fix broken specs on MySQL after https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6896
  Fix Test Env (proper error handling when gitlab-shell is not clonned)
  Fix randomly crashing spinach test for merge request
  [Great spinach fix] Replace gsub with delete
  Remove carriage returns from commit description as summary is on a newline and will always include carriage returns
  Convert due_date_select.js filetype to es6.
  Stop directly parsing due_date with Date.parse, prefer parsing implicitly.
  Improve spec for pipeline metrics worker
  Add Pipeline metrics worker
  ...

88 files changed, 2072 insertions, 860 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ace0de5cad3..76117a48730 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,7 +22,7 @@ before_script:
   - bundle --version
   - '[ "$USE_BUNDLE_INSTALL" != "true" ] || retry bundle install --without postgres production --jobs $(nproc) "${FLAGS[@]}"'
   - retry gem install knapsack
-  - '[ "$SETUP_DB" != "true" ] || bundle exec rake db:drop db:create db:schema:load db:migrate'
+  - '[ "$SETUP_DB" != "true" ] || bundle exec rake db:drop db:create db:schema:load db:migrate add_limits_mysql'
 
 stages:
 - prepare
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bcaf62ac0aa..54cc3bf5afb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ Please view this file on the master branch, on stable branches it's out of date.
   - Update runner version only when updating contacted_at
   - Add link from system note to compare with previous version
   - Use gitlab-shell v3.6.6
+  - Ability to resolve merge request conflicts with editor !6374
   - Add `/projects/visible` API endpoint (Ben Boeckel)
   - Fix centering of custom header logos (Ashley Dumaine)
   - ExpireBuildArtifactsWorker query builds table without ordering enqueuing one job per build to cleanup
@@ -19,8 +20,8 @@ Please view this file on the master branch, on stable branches it's out of date.
   - Clarify documentation for Runners API (Gennady Trafimenkov)
   - The instrumentation for Banzai::Renderer has been restored
   - Change user & group landing page routing from /u/:username to /:username
-  - Prevent running GfmAutocomplete setup for each diff note !6569
   - Added documentation for .gitattributes files
+  - Move Pipeline Metrics to separate worker
   - AbstractReferenceFilter caches project_refs on RequestStore when active
   - Replaced the check sign to arrow in the show build view. !6501
   - Add a /wip slash command to toggle the Work In Progress status of a merge request. !6259 (tbalthazar)
@@ -39,7 +40,6 @@ Please view this file on the master branch, on stable branches it's out of date.
   - Update Gitlab Shell to fix some problems with moving projects between storages
   - Cache rendered markdown in the database, rather than Redis
   - Avoid database queries on Banzai::ReferenceParser::BaseParser for nodes without references
-  - Do not alter 'force_remove_source_branch' options on MergeRequest unless specified
   - Simplify Mentionable concern instance methods
   - API: Ability to retrieve version information (Robert Schilling)
   - Fix permission for setting an issue's due date
@@ -56,6 +56,7 @@ Please view this file on the master branch, on stable branches it's out of date.
   - Added soft wrap button to repository file/blob editor
   - Update namespace validation to forbid reserved names (.git and .atom) (Will Starms)
   - Show the time ago a merge request was deployed to an environment
+  - Add RTL support to markdown renderer (Ebrahim Byagowi)
   - Add word-wrap to issue title on issue and milestone boards (ClemMakesApps)
   - Fix todos page mobile viewport layout (ClemMakesApps)
   - Fix inconsistent highlighting of already selected activity nav-links (ClemMakesApps)
@@ -75,14 +76,12 @@ Please view this file on the master branch, on stable branches it's out of date.
   - Only update issuable labels if they have been changed
   - Take filters in account in issuable counters. !6496
   - Use custom Ruby images to test builds (registry.dev.gitlab.org/gitlab/gitlab-build-images:*)
-  - Prevent flash alert text from being obscured when container is fluid
   - Append issue template to existing description !6149 (Joseph Frazier)
   - Trending projects now only show public projects and the list of projects is cached for a day
   - Memoize Gitlab Shell's secret token (!6599, Justin DiPierro)
   - Revoke button in Applications Settings underlines on hover.
   - Use higher size on Gitlab::Redis connection pool on Sidekiq servers
   - Add missing values to linter !6276 (Katarzyna Kobierska Ula Budziszewska)
-  - Fix Long commit messages overflow viewport in file tree
   - Revert avoid touching file system on Build#artifacts?
   - Stop using a Redis lease when updating the project activity timestamp whenever a new event is created
   - Add disabled delete button to protected branches (ClemMakesApps)
@@ -93,7 +92,7 @@ Please view this file on the master branch, on stable branches it's out of date.
   - Replace bootstrap caret with fontawesome caret (ClemMakesApps)
   - Fix unnecessary escaping of reserved HTML characters in milestone title. !6533
   - Add organization field to user profile
-  - Ignore deployment for statistics in Cycle Analytics, except in staging and production stages
+  - Change user pages routing from /u/:username/PATH to /users/:username/PATH. Old routes will redirect to the new ones for the time being.
   - Fix enter key when navigating search site search dropdown. !6643 (Brennan Roberts)
   - Fix deploy status responsiveness error !6633
   - Make searching for commits case insensitive
@@ -123,8 +122,15 @@ Please view this file on the master branch, on stable branches it's out of date.
 
 ## 8.12.7
 
-  - Use gitlab-markup gem instead of github-markup to fix `.rst` file rendering. !6659
-  - Fix GFM autocomplete setup being called several times
+  - Prevent running `GfmAutocomplete` setup for each diff note. !6569
+  - Fix long commit messages overflow viewport in file tree. !6573
+  - Use `gitlab-markup` gem instead of `github-markup` to fix `.rst` file rendering. !6659
+  - Prevent flash alert text from being obscured when container is fluid. !6694
+  - Fix due date being displayed as `NaN` in Safari. !6797
+  - Fix JS bug with select2 because of missing `data-field` attribute in select box. !6812
+  - Do not alter `force_remove_source_branch` options on MergeRequest unless specified. !6817
+  - Fix GFM autocomplete setup being called several times. !6840
+  - Handle case where deployment ref no longer exists. !6855
 
 ## 8.12.6
 
diff --git a/Gemfile b/Gemfile
index 5f754c1b66f..05166b6a828 100644
--- a/Gemfile
+++ b/Gemfile
@@ -262,8 +262,6 @@ group :development do
 
   # thin instead webrick
   gem 'thin', '~> 1.7.0'
-
-  gem 'activerecord_sane_schema_dumper', '0.2'
 end
 
 group :development, :test do
@@ -310,6 +308,8 @@ group :development, :test do
 
   gem 'license_finder', '~> 2.1.0', require: false
   gem 'knapsack', '~> 1.11.0'
+
+  gem 'activerecord_sane_schema_dumper', '0.2'
 end
 
 group :test do
diff --git a/app/assets/javascripts/dispatcher.js.es6 b/app/assets/javascripts/dispatcher.js.es6
index f3957ed374b..73691f40c74 100644
--- a/app/assets/javascripts/dispatcher.js.es6
+++ b/app/assets/javascripts/dispatcher.js.es6
@@ -50,7 +50,7 @@
         case 'projects:milestones:new':
         case 'projects:milestones:edit':
           new ZenMode();
-          new DueDateSelect();
+          new gl.DueDateSelectors();
           new GLForm($('.milestone-form'));
           break;
         case 'groups:milestones:new':
@@ -101,9 +101,6 @@
           new ZenMode();
           new MergedButtons();
           break;
-        case "projects:merge_requests:conflicts":
-          window.mcui = new MergeConflictResolver()
-          break;
         case 'projects:merge_requests:index':
           shortcut_handler = new ShortcutsNavigation();
           Issuable.init();
diff --git a/app/assets/javascripts/due_date_select.js b/app/assets/javascripts/due_date_select.js
deleted file mode 100644
index bf68b7e3a9b..00000000000
--- a/app/assets/javascripts/due_date_select.js
+++ /dev/null
@@ -1,107 +0,0 @@
-(function() {
-  this.DueDateSelect = (function() {
-    function DueDateSelect() {
-      var $datePicker, $dueDate, $loading;
-      // Milestone edit/new form
-      $datePicker = $('.datepicker');
-      if ($datePicker.length) {
-        $dueDate = $('#milestone_due_date');
-        $datePicker.datepicker({
-          dateFormat: 'yy-mm-dd',
-          onSelect: function(dateText, inst) {
-            return $dueDate.val(dateText);
-          }
-        }).datepicker('setDate', $.datepicker.parseDate('yy-mm-dd', $dueDate.val()));
-      }
-      $('.js-clear-due-date').on('click', function(e) {
-        e.preventDefault();
-        return $.datepicker._clearDate($datePicker);
-      });
-      // Issuable sidebar
-      $loading = $('.js-issuable-update .due_date').find('.block-loading').hide();
-      $('.js-due-date-select').each(function(i, dropdown) {
-        var $block, $dropdown, $dropdownParent, $selectbox, $sidebarValue, $value, $valueContent, abilityName, addDueDate, fieldName, issueUpdateURL;
-        $dropdown = $(dropdown);
-        $dropdownParent = $dropdown.closest('.dropdown');
-        $datePicker = $dropdownParent.find('.js-due-date-calendar');
-        $block = $dropdown.closest('.block');
-        $selectbox = $dropdown.closest('.selectbox');
-        $value = $block.find('.value');
-        $valueContent = $block.find('.value-content');
-        $sidebarValue = $('.js-due-date-sidebar-value', $block);
-        fieldName = $dropdown.data('field-name');
-        abilityName = $dropdown.data('ability-name');
-        issueUpdateURL = $dropdown.data('issue-update');
-        $dropdown.glDropdown({
-          hidden: function() {
-            $selectbox.hide();
-            return $value.css('display', '');
-          }
-        });
-        addDueDate = function(isDropdown) {
-          var data, date, mediumDate, value;
-          // Create the post date
-          value = $("input[name='" + fieldName + "']").val();
-          if (value !== '') {
-            date = new Date(value.replace(new RegExp('-', 'g'), ','));
-            mediumDate = $.datepicker.formatDate('M d, yy', date);
-          } else {
-            mediumDate = 'No due date';
-          }
-          data = {};
-          data[abilityName] = {};
-          data[abilityName].due_date = value;
-          return $.ajax({
-            type: 'PUT',
-            url: issueUpdateURL,
-            data: data,
-            dataType: 'json',
-            beforeSend: function() {
-              var cssClass;
-              $loading.fadeIn();
-              if (isDropdown) {
-                $dropdown.trigger('loading.gl.dropdown');
-                $selectbox.hide();
-              }
-              $value.css('display', '');
-              cssClass = Date.parse(mediumDate) ? 'bold' : 'no-value';
-              $valueContent.html("<span class='" + cssClass + "'>" + mediumDate + "</span>");
-              $sidebarValue.html(mediumDate);
-              if (value !== '') {
-                return $('.js-remove-due-date-holder').removeClass('hidden');
-              } else {
-                return $('.js-remove-due-date-holder').addClass('hidden');
-              }
-            }
-          }).done(function(data) {
-            if (isDropdown) {
-              $dropdown.trigger('loaded.gl.dropdown');
-              $dropdown.dropdown('toggle');
-            }
-            return $loading.fadeOut();
-          });
-        };
-        $block.on('click', '.js-remove-due-date', function(e) {
-          e.preventDefault();
-          $("input[name='" + fieldName + "']").val('');
-          return addDueDate(false);
-        });
-        return $datePicker.datepicker({
-          dateFormat: 'yy-mm-dd',
-          defaultDate: $("input[name='" + fieldName + "']").val(),
-          altField: "input[name='" + fieldName + "']",
-          onSelect: function() {
-            return addDueDate(true);
-          }
-        });
-      });
-      $(document).off('click', '.ui-datepicker-header a').on('click', '.ui-datepicker-header a', function(e) {
-        return e.stopImmediatePropagation();
-      });
-    }
-
-    return DueDateSelect;
-
-  })();
-
-}).call(this);
diff --git a/app/assets/javascripts/due_date_select.js.es6 b/app/assets/javascripts/due_date_select.js.es6
new file mode 100644
index 00000000000..41925fcc8e3
--- /dev/null
+++ b/app/assets/javascripts/due_date_select.js.es6
@@ -0,0 +1,161 @@
+(function(global) {
+  class DueDateSelect {
+    constructor({ $dropdown, $loading } = {}) {
+      const $dropdownParent = $dropdown.closest('.dropdown');
+      const $block = $dropdown.closest('.block');
+      this.$loading = $loading;
+      this.$dropdown = $dropdown;
+      this.$dropdownParent = $dropdownParent;
+      this.$datePicker = $dropdownParent.find('.js-due-date-calendar');
+      this.$block = $block;
+      this.$selectbox = $dropdown.closest('.selectbox');
+      this.$value = $block.find('.value');
+      this.$valueContent = $block.find('.value-content');
+      this.$sidebarValue = $('.js-due-date-sidebar-value', $block);
+      this.fieldName = $dropdown.data('field-name'),
+      this.abilityName = $dropdown.data('ability-name'),
+      this.issueUpdateURL = $dropdown.data('issue-update')
+
+      this.rawSelectedDate = null;
+      this.displayedDate = null;
+      this.datePayload = null;
+
+      this.initGlDropdown();
+      this.initRemoveDueDate();
+      this.initDatePicker();
+      this.initStopPropagation();
+    }
+
+    initGlDropdown() {
+      this.$dropdown.glDropdown({
+        hidden: () => {
+          this.$selectbox.hide();
+          this.$value.css('display', '');
+        }
+      });
+    }
+
+    initDatePicker() {
+      this.$datePicker.datepicker({
+        dateFormat: 'yy-mm-dd',
+        defaultDate: $("input[name='" + this.fieldName + "']").val(),
+        altField: "input[name='" + this.fieldName + "']",
+        onSelect: () => {
+          return this.saveDueDate(true);
+        }
+      });
+    }
+
+    initRemoveDueDate() {
+      this.$block.on('click', '.js-remove-due-date', (e) => {
+        e.preventDefault();
+        $("input[name='" + this.fieldName + "']").val('');
+        return this.saveDueDate(false);
+      });
+    }
+
+    initStopPropagation() {
+      $(document).off('click', '.ui-datepicker-header a').on('click', '.ui-datepicker-header a', (e) => {
+        return e.stopImmediatePropagation();
+      });
+    }
+
+    saveDueDate(isDropdown) {
+      this.parseSelectedDate();
+      this.prepSelectedDate();
+      this.submitSelectedDate(isDropdown);
+    }
+
+    parseSelectedDate() {
+      this.rawSelectedDate = $("input[name='" + this.fieldName + "']").val();
+      if (this.rawSelectedDate.length) {
+        let dateObj = new Date(this.rawSelectedDate);
+        this.displayedDate = $.datepicker.formatDate('M d, yy', dateObj);
+      } else {
+        this.displayedDate = 'No due date';
+      }
+    }
+
+    prepSelectedDate() {
+      const datePayload = {};
+      datePayload[this.abilityName] = {};
+      datePayload[this.abilityName].due_date = this.rawSelectedDate;
+      this.datePayload = datePayload;
+    }
+
+    submitSelectedDate(isDropdown) {
+      return $.ajax({
+        type: 'PUT',
+        url: this.issueUpdateURL,
+        data: this.datePayload,
+        dataType: 'json',
+        beforeSend: () => {
+          const selectedDateValue = this.datePayload[this.abilityName].due_date;
+          const displayedDateStyle = this.displayedDate !== 'No due date' ? 'bold' : 'no-value';
+
+          this.$loading.fadeIn();
+
+          if (isDropdown) {
+            this.$dropdown.trigger('loading.gl.dropdown');
+            this.$selectbox.hide();
+          }
+
+          this.$value.css('display', '');
+          this.$valueContent.html(`<span class='${displayedDateStyle}'>${this.displayedDate}</span>`);
+          this.$sidebarValue.html(this.displayedDate);
+
+          return selectedDateValue.length ?
+            $('.js-remove-due-date-holder').removeClass('hidden') :
+            $('.js-remove-due-date-holder').addClass('hidden');
+
+        }
+      }).done((data) => {
+        if (isDropdown) {
+          this.$dropdown.trigger('loaded.gl.dropdown');
+          this.$dropdown.dropdown('toggle');
+        }
+        return this.$loading.fadeOut();
+      });
+    }
+  }
+
+  class DueDateSelectors {
+    constructor() {
+      this.initMilestoneDueDate();
+      this.initIssuableSelect();
+    }
+
+    initMilestoneDueDate() {
+      const $datePicker = $('.datepicker');
+
+      if ($datePicker.length) {
+        const $dueDate = $('#milestone_due_date');
+        $datePicker.datepicker({
+          dateFormat: 'yy-mm-dd',
+          onSelect: (dateText, inst) => {
+            $dueDate.val(dateText);
+          }
+        }).datepicker('setDate', $.datepicker.parseDate('yy-mm-dd', $dueDate.val()));
+      }
+      $('.js-clear-due-date').on('click', (e) => {
+        e.preventDefault();
+        $.datepicker._clearDate($datePicker);
+      });
+    }
+
+    initIssuableSelect() {
+      const $loading = $('.js-issuable-update .due_date').find('.block-loading').hide();
+
+      $('.js-due-date-select').each((i, dropdown) => {
+        const $dropdown = $(dropdown);
+        new DueDateSelect({
+          $dropdown,
+          $loading
+        });
+      });
+    }
+  }
+
+  global.DueDateSelectors = DueDateSelectors;
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/merge_conflict_data_provider.js.es6 b/app/assets/javascripts/merge_conflict_data_provider.js.es6
deleted file mode 100644
index 13ee794ba38..00000000000
--- a/app/assets/javascripts/merge_conflict_data_provider.js.es6
+++ /dev/null
@@ -1,347 +0,0 @@
-const HEAD_HEADER_TEXT    = 'HEAD//our changes';
-const ORIGIN_HEADER_TEXT  = 'origin//their changes';
-const HEAD_BUTTON_TITLE   = 'Use ours';
-const ORIGIN_BUTTON_TITLE = 'Use theirs';
-
-
-class MergeConflictDataProvider {
-
-  getInitialData() {
-    // TODO: remove reliance on jQuery and DOM state introspection
-    const diffViewType = $.cookie('diff_view');
-    const fixedLayout = $('.content-wrapper .container-fluid').hasClass('container-limited');
-
-    return {
-      isLoading      : true,
-      hasError       : false,
-      isParallel     : diffViewType === 'parallel',
-      diffViewType   : diffViewType,
-      fixedLayout    : fixedLayout,
-      isSubmitting   : false,
-      conflictsData  : {},
-      resolutionData : {}
-    }
-  }
-
-
-  decorateData(vueInstance, data) {
-    this.vueInstance = vueInstance;
-
-    if (data.type === 'error') {
-      vueInstance.hasError = true;
-      data.errorMessage = data.message;
-    }
-    else {
-      data.shortCommitSha = data.commit_sha.slice(0, 7);
-      data.commitMessage  = data.commit_message;
-
-      this.setParallelLines(data);
-      this.setInlineLines(data);
-      this.updateResolutionsData(data);
-    }
-
-    vueInstance.conflictsData = data;
-    vueInstance.isSubmitting = false;
-
-    const conflictsText = this.getConflictsCount() > 1 ? 'conflicts' : 'conflict';
-    vueInstance.conflictsData.conflictsText = conflictsText;
-  }
-
-
-  updateResolutionsData(data) {
-    const vi = this.vueInstance;
-
-    data.files.forEach( (file) => {
-      file.sections.forEach( (section) => {
-        if (section.conflict) {
-          vi.$set(`resolutionData['${section.id}']`, false);
-        }
-      });
-    });
-  }
-
-
-  setParallelLines(data) {
-    data.files.forEach( (file) => {
-      file.filePath  = this.getFilePath(file);
-      file.iconClass = `fa-${file.blob_icon}`;
-      file.blobPath  = file.blob_path;
-      file.parallelLines = [];
-      const linesObj = { left: [], right: [] };
-
-      file.sections.forEach( (section) => {
-        const { conflict, lines, id } = section;
-
-        if (conflict) {
-          linesObj.left.push(this.getOriginHeaderLine(id));
-          linesObj.right.push(this.getHeadHeaderLine(id));
-        }
-
-        lines.forEach( (line) => {
-          const { type } = line;
-
-          if (conflict) {
-            if (type === 'old') {
-              linesObj.left.push(this.getLineForParallelView(line, id, 'conflict'));
-            }
-            else if (type === 'new') {
-              linesObj.right.push(this.getLineForParallelView(line, id, 'conflict', true));
-            }
-          }
-          else {
-            const lineType = type || 'context';
-
-            linesObj.left.push (this.getLineForParallelView(line, id, lineType));
-            linesObj.right.push(this.getLineForParallelView(line, id, lineType, true));
-          }
-        });
-
-        this.checkLineLengths(linesObj);
-      });
-
-      for (let i = 0, len = linesObj.left.length; i < len; i++) {
-        file.parallelLines.push([
-          linesObj.right[i],
-          linesObj.left[i]
-        ]);
-      }
-
-    });
-  }
-
-
-  checkLineLengths(linesObj) {
-    let { left, right } = linesObj;
-
-    if (left.length !== right.length) {
-      if (left.length > right.length) {
-        const diff = left.length - right.length;
-        for (let i = 0; i < diff; i++) {
-          right.push({ lineType: 'emptyLine', richText: '' });
-        }
-      }
-      else {
-        const diff = right.length - left.length;
-        for (let i = 0; i < diff; i++) {
-          left.push({ lineType: 'emptyLine', richText: '' });
-        }
-      }
-    }
-  }
-
-
-  setInlineLines(data) {
-    data.files.forEach( (file) => {
-      file.iconClass   = `fa-${file.blob_icon}`;
-      file.blobPath    = file.blob_path;
-      file.filePath    = this.getFilePath(file);
-      file.inlineLines = []
-
-      file.sections.forEach( (section) => {
-        let currentLineType = 'new';
-        const { conflict, lines, id } = section;
-
-        if (conflict) {
-          file.inlineLines.push(this.getHeadHeaderLine(id));
-        }
-
-        lines.forEach( (line) => {
-          const { type } = line;
-
-          if ((type === 'new' || type === 'old') && currentLineType !== type) {
-            currentLineType = type;
-            file.inlineLines.push({ lineType: 'emptyLine', richText: '' });
-          }
-
-          this.decorateLineForInlineView(line, id, conflict);
-          file.inlineLines.push(line);
-        })
-
-        if (conflict) {
-          file.inlineLines.push(this.getOriginHeaderLine(id));
-        }
-      });
-    });
-  }
-
-
-  handleSelected(sectionId, selection) {
-    const vi = this.vueInstance;
-
-    vi.resolutionData[sectionId] = selection;
-    vi.conflictsData.files.forEach( (file) => {
-      file.inlineLines.forEach( (line) => {
-        if (line.id === sectionId && (line.hasConflict || line.isHeader)) {
-          this.markLine(line, selection);
-        }
-      });
-
-      file.parallelLines.forEach( (lines) => {
-        const left         = lines[0];
-        const right        = lines[1];
-        const hasSameId    = right.id === sectionId || left.id === sectionId;
-        const isLeftMatch  = left.hasConflict || left.isHeader;
-        const isRightMatch = right.hasConflict || right.isHeader;
-
-        if (hasSameId && (isLeftMatch || isRightMatch)) {
-          this.markLine(left, selection);
-          this.markLine(right, selection);
-        }
-      })
-    });
-  }
-
-
-  updateViewType(newType) {
-    const vi = this.vueInstance;
-
-    if (newType === vi.diffViewType || !(newType === 'parallel' || newType === 'inline')) {
-      return;
-    }
-
-    vi.diffViewType = newType;
-    vi.isParallel   = newType === 'parallel';
-    $.cookie('diff_view', newType, {
-      path: (gon && gon.relative_url_root) || '/'
-    });
-    $('.content-wrapper .container-fluid')
-      .toggleClass('container-limited', !vi.isParallel && vi.fixedLayout);
-  }
-
-
-  markLine(line, selection) {
-    if (selection === 'head' && line.isHead) {
-      line.isSelected   = true;
-      line.isUnselected = false;
-    }
-    else if (selection === 'origin' && line.isOrigin) {
-      line.isSelected   = true;
-      line.isUnselected = false;
-    }
-    else {
-      line.isSelected   = false;
-      line.isUnselected = true;
-    }
-  }
-
-
-  getConflictsCount() {
-    return Object.keys(this.vueInstance.resolutionData).length;
-  }
-
-
-  getResolvedCount() {
-    let  count = 0;
-    const data = this.vueInstance.resolutionData;
-
-    for (const id in data) {
-      const resolution = data[id];
-      if (resolution) {
-        count++;
-      }
-    }
-
-    return count;
-  }
-
-
-  isReadyToCommit() {
-    const { conflictsData, isSubmitting } = this.vueInstance
-    const allResolved = this.getConflictsCount() === this.getResolvedCount();
-    const hasCommitMessage = $.trim(conflictsData.commitMessage).length;
-
-    return !isSubmitting && hasCommitMessage && allResolved;
-  }
-
-
-  getCommitButtonText() {
-    const initial = 'Commit conflict resolution';
-    const inProgress = 'Committing...';
-    const vue = this.vueInstance;
-
-    return vue ? vue.isSubmitting ? inProgress : initial : initial;
-  }
-
-
-  decorateLineForInlineView(line, id, conflict) {
-    const { type }    = line;
-    line.id           = id;
-    line.hasConflict  = conflict;
-    line.isHead       = type === 'new';
-    line.isOrigin     = type === 'old';
-    line.hasMatch     = type === 'match';
-    line.richText     = line.rich_text;
-    line.isSelected   = false;
-    line.isUnselected = false;
-  }
-
-  getLineForParallelView(line, id, lineType, isHead) {
-    const { old_line, new_line, rich_text } = line;
-    const hasConflict = lineType === 'conflict';
-
-    return {
-      id,
-      lineType,
-      hasConflict,
-      isHead       : hasConflict && isHead,
-      isOrigin     : hasConflict && !isHead,
-      hasMatch     : lineType === 'match',
-      lineNumber   : isHead ? new_line : old_line,
-      section      : isHead ? 'head' : 'origin',
-      richText     : rich_text,
-      isSelected   : false,
-      isUnselected : false
-    }
-  }
-
-
-  getHeadHeaderLine(id) {
-    return {
-      id          : id,
-      richText    : HEAD_HEADER_TEXT,
-      buttonTitle : HEAD_BUTTON_TITLE,
-      type        : 'new',
-      section     : 'head',
-      isHeader    : true,
-      isHead      : true,
-      isSelected  : false,
-      isUnselected: false
-    }
-  }
-
-
-  getOriginHeaderLine(id) {
-    return {
-      id          : id,
-      richText    : ORIGIN_HEADER_TEXT,
-      buttonTitle : ORIGIN_BUTTON_TITLE,
-      type        : 'old',
-      section     : 'origin',
-      isHeader    : true,
-      isOrigin    : true,
-      isSelected  : false,
-      isUnselected: false
-    }
-  }
-
-
-  handleFailedRequest(vueInstance, data) {
-    vueInstance.hasError = true;
-    vueInstance.conflictsData.errorMessage = 'Something went wrong!';
-  }
-
-
-  getCommitData() {
-    return {
-      commit_message: this.vueInstance.conflictsData.commitMessage,
-      sections: this.vueInstance.resolutionData
-    }
-  }
-
-
-  getFilePath(file) {
-    const { old_path, new_path } = file;
-    return old_path === new_path ? new_path : `${old_path} → ${new_path}`;
-  }
-
-}
diff --git a/app/assets/javascripts/merge_conflict_resolver.js.es6 b/app/assets/javascripts/merge_conflict_resolver.js.es6
deleted file mode 100644
index 7e756433bf5..00000000000
--- a/app/assets/javascripts/merge_conflict_resolver.js.es6
+++ /dev/null
@@ -1,82 +0,0 @@
-//= require vue
-
-class MergeConflictResolver {
-
-  constructor() {
-    this.dataProvider = new MergeConflictDataProvider()
-    this.initVue()
-  }
-
-
-  initVue() {
-    const that = this;
-    this.vue   = new Vue({
-      el       : '#conflicts',
-      name     : 'MergeConflictResolver',
-      data     : this.dataProvider.getInitialData(),
-      created  : this.fetchData(),
-      computed : this.setComputedProperties(),
-      methods  : {
-        handleSelected(sectionId, selection) {
-          that.dataProvider.handleSelected(sectionId, selection);
-        },
-        handleViewTypeChange(newType) {
-          that.dataProvider.updateViewType(newType);
-        },
-        commit() {
-          that.commit();
-        }
-      }
-    })
-  }
-
-
-  setComputedProperties() {
-    const dp = this.dataProvider;
-
-    return {
-      conflictsCount() { return dp.getConflictsCount() },
-      resolvedCount() { return dp.getResolvedCount() },
-      readyToCommit() { return dp.isReadyToCommit() },
-      commitButtonText() { return dp.getCommitButtonText() }
-    }
-  }
-
-
-  fetchData() {
-    const dp = this.dataProvider;
-
-    $.get($('#conflicts').data('conflictsPath'))
-      .done((data) => {
-        dp.decorateData(this.vue, data);
-      })
-      .error((data) => {
-        dp.handleFailedRequest(this.vue, data);
-      })
-      .always(() => {
-        this.vue.isLoading = false;
-
-        this.vue.$nextTick(() => {
-          $('#conflicts .js-syntax-highlight').syntaxHighlight();
-        });
-
-        $('.content-wrapper .container-fluid')
-          .toggleClass('container-limited', !this.vue.isParallel && this.vue.fixedLayout);
-      })
-  }
-
-
-  commit() {
-    this.vue.isSubmitting = true;
-
-    $.post($('#conflicts').data('resolveConflictsPath'), this.dataProvider.getCommitData())
-      .done((data) => {
-        window.location.href = data.redirect_to;
-      })
-      .error(() => {
-        this.vue.isSubmitting = false;
-        new Flash('Something went wrong!');
-      });
-  }
-
-}
diff --git a/app/assets/javascripts/merge_conflicts/components/diff_file_editor.js.es6 b/app/assets/javascripts/merge_conflicts/components/diff_file_editor.js.es6
new file mode 100644
index 00000000000..5012bdfe997
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/components/diff_file_editor.js.es6
@@ -0,0 +1,93 @@
+((global) => {
+
+  global.mergeConflicts = global.mergeConflicts || {};
+
+  global.mergeConflicts.diffFileEditor = Vue.extend({
+    props: {
+      file: Object,
+      onCancelDiscardConfirmation: Function,
+      onAcceptDiscardConfirmation: Function
+    },
+    data() {
+      return {
+        saved: false,
+        loading: false,
+        fileLoaded: false,
+        originalContent: '',
+      }
+    },
+    computed: {
+      classObject() {
+        return {
+          'saved': this.saved,
+          'is-loading': this.loading
+        };
+      }
+    },
+    watch: {
+      ['file.showEditor'](val) {
+        this.resetEditorContent();
+
+        if (!val || this.fileLoaded || this.loading) {
+          return;
+        }
+
+        this.loadEditor();
+      }
+    },
+    ready() {
+      if (this.file.loadEditor) {
+        this.loadEditor();
+      }
+    },
+    methods: {
+      loadEditor() {
+        this.loading = true;
+
+        $.get(this.file.content_path)
+          .done((file) => {
+            let content = this.$el.querySelector('pre');
+            let fileContent = document.createTextNode(file.content);
+
+            content.textContent = fileContent.textContent;
+
+            this.originalContent = file.content;
+            this.fileLoaded = true;
+            this.editor = ace.edit(content);
+            this.editor.$blockScrolling = Infinity; // Turn off annoying warning
+            this.editor.getSession().setMode(`ace/mode/${file.blob_ace_mode}`);
+            this.editor.on('change', () => {
+              this.saveDiffResolution();
+            });
+            this.saveDiffResolution();
+          })
+          .fail(() => {
+            new Flash('Failed to load the file, please try again.');
+          })
+          .always(() => {
+            this.loading = false;
+          });
+      },
+      saveDiffResolution() {
+        this.saved = true;
+
+        // This probably be better placed in the data provider
+        this.file.content = this.editor.getValue();
+        this.file.resolveEditChanged = this.file.content !== this.originalContent;
+        this.file.promptDiscardConfirmation = false;
+      },
+      resetEditorContent() {
+        if (this.fileLoaded) {
+          this.editor.setValue(this.originalContent, -1);
+        }
+      },
+      cancelDiscardConfirmation(file) {
+        this.onCancelDiscardConfirmation(file);
+      },
+      acceptDiscardConfirmation(file) {
+        this.onAcceptDiscardConfirmation(file);
+      }
+    }
+  });
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/merge_conflicts/components/inline_conflict_lines.js.es6 b/app/assets/javascripts/merge_conflicts/components/inline_conflict_lines.js.es6
new file mode 100644
index 00000000000..b4be1c8988d
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/components/inline_conflict_lines.js.es6
@@ -0,0 +1,12 @@
+((global) => {
+
+  global.mergeConflicts = global.mergeConflicts || {};
+
+  global.mergeConflicts.inlineConflictLines = Vue.extend({
+    props: {
+      file: Object
+    },
+    mixins: [global.mergeConflicts.utils, global.mergeConflicts.actions],
+  });
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/merge_conflicts/components/parallel_conflict_line.js.es6 b/app/assets/javascripts/merge_conflicts/components/parallel_conflict_line.js.es6
new file mode 100644
index 00000000000..8b0a8ab2073
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/components/parallel_conflict_line.js.es6
@@ -0,0 +1,14 @@
+((global) => {
+
+  global.mergeConflicts = global.mergeConflicts || {};
+
+  global.mergeConflicts.parallelConflictLine = Vue.extend({
+    props: {
+      file: Object,
+      line: Object
+    },
+    mixins: [global.mergeConflicts.utils, global.mergeConflicts.actions],
+    template: '#parallel-conflict-line'
+  });
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/merge_conflicts/components/parallel_conflict_lines.js.es6 b/app/assets/javascripts/merge_conflicts/components/parallel_conflict_lines.js.es6
new file mode 100644
index 00000000000..eb4cc6a9dac
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/components/parallel_conflict_lines.js.es6
@@ -0,0 +1,15 @@
+((global) => {
+
+  global.mergeConflicts = global.mergeConflicts || {};
+
+  global.mergeConflicts.parallelConflictLines = Vue.extend({
+    props: {
+      file: Object
+    },
+    mixins: [global.mergeConflicts.utils],
+    components: {
+      'parallel-conflict-line': gl.mergeConflicts.parallelConflictLine
+    }
+  });
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/merge_conflicts/merge_conflict_service.js.es6 b/app/assets/javascripts/merge_conflicts/merge_conflict_service.js.es6
new file mode 100644
index 00000000000..da2fb8b1323
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/merge_conflict_service.js.es6
@@ -0,0 +1,30 @@
+((global) => {
+  global.mergeConflicts = global.mergeConflicts || {};
+
+  class mergeConflictsService {
+    constructor(options) {
+      this.conflictsPath = options.conflictsPath;
+      this.resolveConflictsPath = options.resolveConflictsPath;
+    }
+
+    fetchConflictsData() {
+      return $.ajax({
+        dataType: 'json',
+        url: this.conflictsPath
+      });
+    }
+
+    submitResolveConflicts(data) {
+      return $.ajax({
+        url: this.resolveConflictsPath,
+        data: JSON.stringify(data),
+        contentType: 'application/json',
+        dataType: 'json',
+        method: 'POST'
+      });
+    }
+  };
+
+  global.mergeConflicts.mergeConflictsService = mergeConflictsService;
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/merge_conflicts/merge_conflict_store.js.es6 b/app/assets/javascripts/merge_conflicts/merge_conflict_store.js.es6
new file mode 100644
index 00000000000..5c5c65f29d4
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/merge_conflict_store.js.es6
@@ -0,0 +1,437 @@
+((global) => {
+  global.mergeConflicts = global.mergeConflicts || {};
+
+  const diffViewType = $.cookie('diff_view');
+  const HEAD_HEADER_TEXT = 'HEAD//our changes';
+  const ORIGIN_HEADER_TEXT = 'origin//their changes';
+  const HEAD_BUTTON_TITLE = 'Use ours';
+  const ORIGIN_BUTTON_TITLE = 'Use theirs';
+  const INTERACTIVE_RESOLVE_MODE = 'interactive';
+  const EDIT_RESOLVE_MODE = 'edit';
+  const DEFAULT_RESOLVE_MODE = INTERACTIVE_RESOLVE_MODE;
+  const VIEW_TYPES = {
+    INLINE: 'inline',
+    PARALLEL: 'parallel'
+  };
+  const CONFLICT_TYPES = {
+    TEXT: 'text',
+    TEXT_EDITOR: 'text-editor'
+  };
+
+  global.mergeConflicts.mergeConflictsStore = {
+    state: {
+      isLoading: true,
+      hasError: false,
+      isSubmitting: false,
+      isParallel: diffViewType === VIEW_TYPES.PARALLEL,
+      diffViewType: diffViewType,
+      conflictsData: {}
+    },
+
+    setConflictsData(data) {
+      this.decorateFiles(data.files);
+
+      this.state.conflictsData = {
+        files: data.files,
+        commitMessage: data.commit_message,
+        sourceBranch: data.source_branch,
+        targetBranch: data.target_branch,
+        commitMessage: data.commit_message,
+        shortCommitSha: data.commit_sha.slice(0, 7),
+      };
+    },
+
+    decorateFiles(files) {
+      files.forEach((file) => {
+        file.content = '';
+        file.resolutionData = {};
+        file.promptDiscardConfirmation = false;
+        file.resolveMode = DEFAULT_RESOLVE_MODE;
+        file.filePath = this.getFilePath(file);
+        file.iconClass = `fa-${file.blob_icon}`;
+        file.blobPath = file.blob_path;
+
+        if (file.type === CONFLICT_TYPES.TEXT) {
+          file.showEditor = false;
+          file.loadEditor = false;
+
+          this.setInlineLine(file);
+          this.setParallelLine(file);
+        } else if (file.type === CONFLICT_TYPES.TEXT_EDITOR) {
+          file.showEditor = true;
+          file.loadEditor = true;
+        }
+      });
+    },
+
+    setInlineLine(file) {
+      file.inlineLines = [];
+
+      file.sections.forEach((section) => {
+        let currentLineType = 'new';
+        const { conflict, lines, id } = section;
+
+        if (conflict) {
+          file.inlineLines.push(this.getHeadHeaderLine(id));
+        }
+
+        lines.forEach((line) => {
+          const { type } = line;
+
+          if ((type === 'new' || type === 'old') && currentLineType !== type) {
+            currentLineType = type;
+            file.inlineLines.push({ lineType: 'emptyLine', richText: '' });
+          }
+
+          this.decorateLineForInlineView(line, id, conflict);
+          file.inlineLines.push(line);
+        })
+
+        if (conflict) {
+          file.inlineLines.push(this.getOriginHeaderLine(id));
+        }
+      });
+    },
+
+    setParallelLine(file) {
+      file.parallelLines = [];
+      const linesObj = { left: [], right: [] };
+
+      file.sections.forEach((section) => {
+        const { conflict, lines, id } = section;
+
+        if (conflict) {
+          linesObj.left.push(this.getOriginHeaderLine(id));
+          linesObj.right.push(this.getHeadHeaderLine(id));
+        }
+
+        lines.forEach((line) => {
+          const { type } = line;
+
+          if (conflict) {
+            if (type === 'old') {
+              linesObj.left.push(this.getLineForParallelView(line, id, 'conflict'));
+            } else if (type === 'new') {
+              linesObj.right.push(this.getLineForParallelView(line, id, 'conflict', true));
+            }
+          } else {
+            const lineType = type || 'context';
+
+            linesObj.left.push (this.getLineForParallelView(line, id, lineType));
+            linesObj.right.push(this.getLineForParallelView(line, id, lineType, true));
+          }
+        });
+
+        this.checkLineLengths(linesObj);
+      });
+
+      for (let i = 0, len = linesObj.left.length; i < len; i++) {
+        file.parallelLines.push([
+          linesObj.right[i],
+          linesObj.left[i]
+        ]);
+      }
+    },
+
+    setLoadingState(state) {
+      this.state.isLoading = state;
+    },
+
+    setErrorState(state) {
+      this.state.hasError = state;
+    },
+
+    setFailedRequest(message) {
+      this.state.hasError = true;
+      this.state.conflictsData.errorMessage = message;
+    },
+
+    getConflictsCount() {
+      if (!this.state.conflictsData.files.length) {
+        return 0;
+      }
+
+      const files = this.state.conflictsData.files;
+      let count = 0;
+
+      files.forEach((file) => {
+        if (file.type === CONFLICT_TYPES.TEXT) {
+          file.sections.forEach((section) => {
+            if (section.conflict) {
+              count++;
+            }
+          });
+        } else {
+          count++;
+        }
+      });
+
+      return count;
+    },
+
+    getConflictsCountText() {
+      const count = this.getConflictsCount();
+      const text = count ? 'conflicts' : 'conflict';
+
+      return `${count} ${text}`;
+    },
+
+    setViewType(viewType) {
+      this.state.diffView = viewType;
+      this.state.isParallel = viewType === VIEW_TYPES.PARALLEL;
+
+      $.cookie('diff_view', viewType, {
+        path: gon.relative_url_root || '/'
+      });
+    },
+
+    getHeadHeaderLine(id) {
+      return {
+        id: id,
+        richText: HEAD_HEADER_TEXT,
+        buttonTitle: HEAD_BUTTON_TITLE,
+        type: 'new',
+        section: 'head',
+        isHeader: true,
+        isHead: true,
+        isSelected: false,
+        isUnselected: false
+      };
+    },
+
+    decorateLineForInlineView(line, id, conflict) {
+      const { type } = line;
+      line.id = id;
+      line.hasConflict = conflict;
+      line.isHead = type === 'new';
+      line.isOrigin = type === 'old';
+      line.hasMatch = type === 'match';
+      line.richText = line.rich_text;
+      line.isSelected = false;
+      line.isUnselected = false;
+    },
+
+    getLineForParallelView(line, id, lineType, isHead) {
+      const { old_line, new_line, rich_text } = line;
+      const hasConflict = lineType === 'conflict';
+
+      return {
+        id,
+        lineType,
+        hasConflict,
+        isHead: hasConflict && isHead,
+        isOrigin: hasConflict && !isHead,
+        hasMatch: lineType === 'match',
+        lineNumber: isHead ? new_line : old_line,
+        section: isHead ? 'head' : 'origin',
+        richText: rich_text,
+        isSelected: false,
+        isUnselected: false
+      };
+    },
+
+    getOriginHeaderLine(id) {
+      return {
+        id: id,
+        richText: ORIGIN_HEADER_TEXT,
+        buttonTitle: ORIGIN_BUTTON_TITLE,
+        type: 'old',
+        section: 'origin',
+        isHeader: true,
+        isOrigin: true,
+        isSelected: false,
+        isUnselected: false
+      };
+    },
+
+    getFilePath(file) {
+      const { old_path, new_path } = file;
+      return old_path === new_path ? new_path : `${old_path} → ${new_path}`;
+    },
+
+    checkLineLengths(linesObj) {
+      let { left, right } = linesObj;
+
+      if (left.length !== right.length) {
+        if (left.length > right.length) {
+          const diff = left.length - right.length;
+          for (let i = 0; i < diff; i++) {
+            right.push({ lineType: 'emptyLine', richText: '' });
+          }
+        } else {
+          const diff = right.length - left.length;
+          for (let i = 0; i < diff; i++) {
+            left.push({ lineType: 'emptyLine', richText: '' });
+          }
+        }
+      }
+    },
+
+    setPromptConfirmationState(file, state) {
+      file.promptDiscardConfirmation = state;
+    },
+
+    setFileResolveMode(file, mode) {
+      if (mode === INTERACTIVE_RESOLVE_MODE) {
+        file.showEditor = false;
+      } else if (mode === EDIT_RESOLVE_MODE) {
+        // Restore Interactive mode when switching to Edit mode
+        file.showEditor = true;
+        file.loadEditor = true;
+        file.resolutionData = {};
+
+        this.restoreFileLinesState(file);
+      }
+
+      file.resolveMode = mode;
+    },
+
+    restoreFileLinesState(file) {
+      file.inlineLines.forEach((line) => {
+        if (line.hasConflict || line.isHeader) {
+          line.isSelected = false;
+          line.isUnselected = false;
+        }
+      });
+
+      file.parallelLines.forEach((lines) => {
+        const left = lines[0];
+        const right = lines[1];
+        const isLeftMatch = left.hasConflict || left.isHeader;
+        const isRightMatch = right.hasConflict || right.isHeader;
+
+        if (isLeftMatch || isRightMatch) {
+          left.isSelected = false;
+          left.isUnselected = false;
+          right.isSelected = false;
+          right.isUnselected = false;
+        }
+      });
+    },
+
+    isReadyToCommit() {
+      const files = this.state.conflictsData.files;
+      const hasCommitMessage = $.trim(this.state.conflictsData.commitMessage).length;
+      let unresolved = 0;
+
+      for (let i = 0, l = files.length; i < l; i++) {
+        let file = files[i];
+
+        if (file.resolveMode === INTERACTIVE_RESOLVE_MODE) {
+          let numberConflicts = 0;
+          let resolvedConflicts = Object.keys(file.resolutionData).length
+
+          // We only check for conflicts type 'text'
+          // since conflicts `text_editor` can´t be resolved in interactive mode
+          if (file.type === CONFLICT_TYPES.TEXT) {
+            for (let j = 0, k = file.sections.length; j < k; j++) {
+              if (file.sections[j].conflict) {
+                numberConflicts++;
+              }
+            }
+
+            if (resolvedConflicts !== numberConflicts) {
+              unresolved++;
+            }
+          }
+        } else if (file.resolveMode === EDIT_RESOLVE_MODE) {
+
+          // Unlikely to happen since switching to Edit mode saves content automatically.
+          // Checking anyway in case the save strategy changes in the future
+          if (!file.content) {
+            unresolved++;
+            continue;
+          }
+        }
+      }
+
+      return !this.state.isSubmitting && hasCommitMessage && !unresolved;
+    },
+
+    getCommitButtonText() {
+      const initial = 'Commit conflict resolution';
+      const inProgress = 'Committing...';
+
+      return this.state ? this.state.isSubmitting ? inProgress : initial : initial;
+    },
+
+    getCommitData() {
+      let commitData = {};
+
+      commitData = {
+        commit_message: this.state.conflictsData.commitMessage,
+        files: []
+      };
+
+      this.state.conflictsData.files.forEach((file) => {
+        let addFile;
+
+        addFile = {
+          old_path: file.old_path,
+          new_path: file.new_path
+        };
+
+        if (file.type === CONFLICT_TYPES.TEXT) {
+
+          // Submit only one data for type of editing
+          if (file.resolveMode === INTERACTIVE_RESOLVE_MODE) {
+            addFile.sections = file.resolutionData;
+          } else if (file.resolveMode === EDIT_RESOLVE_MODE) {
+            addFile.content = file.content;
+          }
+        } else if (file.type === CONFLICT_TYPES.TEXT_EDITOR) {
+          addFile.content = file.content;
+        }
+
+        commitData.files.push(addFile);
+      });
+
+      return commitData;
+    },
+
+    handleSelected(file, sectionId, selection) {
+      Vue.set(file.resolutionData, sectionId, selection);
+
+      file.inlineLines.forEach((line) => {
+        if (line.id === sectionId && (line.hasConflict || line.isHeader)) {
+          this.markLine(line, selection);
+        }
+      });
+
+      file.parallelLines.forEach((lines) => {
+        const left = lines[0];
+        const right = lines[1];
+        const hasSameId = right.id === sectionId || left.id === sectionId;
+        const isLeftMatch = left.hasConflict || left.isHeader;
+        const isRightMatch = right.hasConflict || right.isHeader;
+
+        if (hasSameId && (isLeftMatch || isRightMatch)) {
+          this.markLine(left, selection);
+          this.markLine(right, selection);
+        }
+      });
+    },
+
+    markLine(line, selection) {
+      if (selection === 'head' && line.isHead) {
+        line.isSelected = true;
+        line.isUnselected = false;
+      } else if (selection === 'origin' && line.isOrigin) {
+        line.isSelected = true;
+        line.isUnselected = false;
+      } else {
+        line.isSelected = false;
+        line.isUnselected = true;
+      }
+    },
+
+    setSubmitState(state) {
+      this.state.isSubmitting = state;
+    },
+
+    fileTextTypePresent() {
+      return this.state.conflictsData.files.some(f => f.type === CONFLICT_TYPES.TEXT);
+    }
+  };
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/merge_conflicts/merge_conflicts_bundle.js.es6 b/app/assets/javascripts/merge_conflicts/merge_conflicts_bundle.js.es6
new file mode 100644
index 00000000000..7fd3749b3e2
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/merge_conflicts_bundle.js.es6
@@ -0,0 +1,89 @@
+//= require vue
+//= require ./merge_conflict_store
+//= require ./merge_conflict_service
+//= require ./mixins/line_conflict_utils
+//= require ./mixins/line_conflict_actions
+//= require ./components/diff_file_editor
+//= require ./components/inline_conflict_lines
+//= require ./components/parallel_conflict_line
+//= require ./components/parallel_conflict_lines
+
+$(() => {
+  const INTERACTIVE_RESOLVE_MODE = 'interactive';
+  const conflictsEl = document.querySelector('#conflicts');
+  const mergeConflictsStore = gl.mergeConflicts.mergeConflictsStore;
+  const mergeConflictsService = new gl.mergeConflicts.mergeConflictsService({
+    conflictsPath: conflictsEl.dataset.conflictsPath,
+    resolveConflictsPath: conflictsEl.dataset.resolveConflictsPath
+  });
+
+  gl.MergeConflictsResolverApp = new Vue({
+    el: '#conflicts',
+    data: mergeConflictsStore.state,
+    components: {
+      'diff-file-editor': gl.mergeConflicts.diffFileEditor,
+      'inline-conflict-lines': gl.mergeConflicts.inlineConflictLines,
+      'parallel-conflict-lines': gl.mergeConflicts.parallelConflictLines
+    },
+    computed: {
+      conflictsCountText() { return mergeConflictsStore.getConflictsCountText() },
+      readyToCommit() { return mergeConflictsStore.isReadyToCommit() },
+      commitButtonText() { return mergeConflictsStore.getCommitButtonText() },
+      showDiffViewTypeSwitcher() { return mergeConflictsStore.fileTextTypePresent() }
+    },
+    created() {
+      mergeConflictsService
+        .fetchConflictsData()
+        .done((data) => {
+          if (data.type === 'error') {
+            mergeConflictsStore.setFailedRequest(data.message);
+          } else {
+            mergeConflictsStore.setConflictsData(data);
+          }
+        })
+        .error(() => {
+          mergeConflictsStore.setFailedRequest();
+        })
+        .always(() => {
+          mergeConflictsStore.setLoadingState(false);
+
+          this.$nextTick(() => {
+            $(conflictsEl.querySelectorAll('.js-syntax-highlight')).syntaxHighlight();
+          });
+        });
+    },
+    methods: {
+      handleViewTypeChange(viewType) {
+        mergeConflictsStore.setViewType(viewType);
+      },
+      onClickResolveModeButton(file, mode) {
+        if (mode === INTERACTIVE_RESOLVE_MODE && file.resolveEditChanged) {
+          mergeConflictsStore.setPromptConfirmationState(file, true);
+          return;
+        }
+
+        mergeConflictsStore.setFileResolveMode(file, mode);
+      },
+      acceptDiscardConfirmation(file) {
+        mergeConflictsStore.setPromptConfirmationState(file, false);
+        mergeConflictsStore.setFileResolveMode(file, INTERACTIVE_RESOLVE_MODE);
+      },
+      cancelDiscardConfirmation(file) {
+        mergeConflictsStore.setPromptConfirmationState(file, false);
+      },
+      commit() {
+        mergeConflictsStore.setSubmitState(true);
+
+        mergeConflictsService
+          .submitResolveConflicts(mergeConflictsStore.getCommitData())
+          .done((data) => {
+            window.location.href = data.redirect_to;
+          })
+          .error(() => {
+            mergeConflictsStore.setSubmitState(false);
+            new Flash('Failed to save merge conflicts resolutions. Please try again!');
+          });
+      }
+    }
+  })
+});
diff --git a/app/assets/javascripts/merge_conflicts/mixins/line_conflict_actions.js.es6 b/app/assets/javascripts/merge_conflicts/mixins/line_conflict_actions.js.es6
new file mode 100644
index 00000000000..114a2c5b305
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/mixins/line_conflict_actions.js.es6
@@ -0,0 +1,12 @@
+((global) => {
+  global.mergeConflicts = global.mergeConflicts || {};
+
+  global.mergeConflicts.actions = {
+    methods: {
+      handleSelected(file, sectionId, selection) {
+        gl.mergeConflicts.mergeConflictsStore.handleSelected(file, sectionId, selection);
+      }
+    }
+  };
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/merge_conflicts/mixins/line_conflict_utils.js.es6 b/app/assets/javascripts/merge_conflicts/mixins/line_conflict_utils.js.es6
new file mode 100644
index 00000000000..b846a90ab2a
--- /dev/null
+++ b/app/assets/javascripts/merge_conflicts/mixins/line_conflict_utils.js.es6
@@ -0,0 +1,18 @@
+((global) => {
+  global.mergeConflicts = global.mergeConflicts || {};
+
+  global.mergeConflicts.utils = {
+    methods: {
+      lineCssClass(line) {
+        return {
+          'head': line.isHead,
+          'origin': line.isOrigin,
+          'match': line.hasMatch,
+          'selected': line.isSelected,
+          'unselected': line.isUnselected
+        };
+      }
+    }
+  };
+
+})(window.gl || (window.gl = {}));
diff --git a/app/assets/javascripts/pipelines.js.es6 b/app/assets/javascripts/pipelines.js.es6
index 6bf63ee6979..a7624de6089 100644
--- a/app/assets/javascripts/pipelines.js.es6
+++ b/app/assets/javascripts/pipelines.js.es6
@@ -15,7 +15,7 @@
       $($pipelineBtn).add($pipelineGraph).toggleClass('graph-collapsed');
 
 
-      graphCollapsed ? $btnText.text('Expand') : $btnText.text('Hide')
+      graphCollapsed ? $btnText.text('Hide') : $btnText.text('Expand')
     }
 
     addMarginToBuildColumns() {
diff --git a/app/assets/javascripts/project_find_file.js b/app/assets/javascripts/project_find_file.js
index 8e38ccf7e44..b8347367717 100644
--- a/app/assets/javascripts/project_find_file.js
+++ b/app/assets/javascripts/project_find_file.js
@@ -7,6 +7,7 @@
     function ProjectFindFile(element1, options) {
       this.element = element1;
       this.options = options;
+      this.goToBlob = bind(this.goToBlob, this);
       this.goToTree = bind(this.goToTree, this);
       this.selectRowDown = bind(this.selectRowDown, this);
       this.selectRowUp = bind(this.selectRowUp, this);
@@ -154,6 +155,14 @@
       return location.href = this.options.treeUrl;
     };
 
+    ProjectFindFile.prototype.goToBlob = function() {
+      var $link = this.element.find(".tree-item.selected .tree-item-file-name a");
+
+      if ($link.length) {
+        $link.get(0).click();
+      }
+    };
+
     return ProjectFindFile;
 
   })();
diff --git a/app/assets/javascripts/username_validator.js.es6 b/app/assets/javascripts/username_validator.js.es6
index 2517f778365..bf4b2e320cd 100644
--- a/app/assets/javascripts/username_validator.js.es6
+++ b/app/assets/javascripts/username_validator.js.es6
@@ -76,7 +76,7 @@
         this.renderState();
         return $.ajax({
           type: 'GET',
-          url: `/u/${username}/exists`,
+          url: `/users/${username}/exists`,
           dataType: 'json',
           success: (res) => this.setAvailabilityState(res.exists)
         });
diff --git a/app/assets/stylesheets/framework/typography.scss b/app/assets/stylesheets/framework/typography.scss
index 8df0067fac1..55de9053be5 100644
--- a/app/assets/stylesheets/framework/typography.scss
+++ b/app/assets/stylesheets/framework/typography.scss
@@ -45,40 +45,38 @@
   }
 
   h1 {
-    font-size: 2em;
+    font-size: 1.75em;
     font-weight: 600;
-    margin: 1em 0 10px;
+    margin: 16px 0 10px;
     padding: 0 0 0.3em;
-    border-bottom: 1px solid $btn-default-border;
+    border-bottom: 1px solid $white-dark;
     color: $gl-gray-dark;
   }
 
   h2 {
-    font-size: 1.6em;
+    font-size: 1.5em;
     font-weight: 600;
-    margin: 1em 0 10px;
-    padding-bottom: 0.3em;
-    border-bottom: 1px solid $btn-default-border;
+    margin: 16px 0 10px;
     color: $gl-gray-dark;
   }
 
   h3 {
-    margin: 1em 0 10px;
-    font-size: 1.4em;
+    margin: 16px 0 10px;
+    font-size: 1.3em;
   }
 
   h4 {
-    margin: 1em 0 10px;
-    font-size: 1.25em;
+    margin: 16px 0 10px;
+    font-size: 1.2em;
   }
 
   h5 {
-    margin: 1em 0 10px;
+    margin: 16px 0 10px;
     font-size: 1em;
   }
 
   h6 {
-    margin: 1em 0 10px;
+    margin: 16px 0 10px;
     font-size: 0.95em;
   }
 
@@ -87,7 +85,12 @@
     font-size: inherit;
     padding: 8px 21px;
     margin: 12px 0;
-    border-left: 3px solid #e7e9ed;
+    border-left: 3px solid $white-dark;
+  }
+
+  blockquote:dir(rtl) {
+    border-left: 0;
+    border-right: 3px solid $white-dark;
   }
 
   blockquote p {
@@ -112,6 +115,10 @@
     }
   }
 
+  table:dir(rtl) th {
+    text-align: right;
+  }
+
   pre {
     margin: 12px 0;
     font-size: 13px;
@@ -129,6 +136,10 @@
     margin: 3px 0 3px 28px !important;
   }
 
+  ul:dir(rtl), ol:dir(rtl) {
+    margin: 3px 28px 3px 0 !important;
+  }
+
   li {
     line-height: 1.6em;
   }
diff --git a/app/assets/stylesheets/framework/variables.scss b/app/assets/stylesheets/framework/variables.scss
index 4c34ed3ebf7..7690d65de8e 100644
--- a/app/assets/stylesheets/framework/variables.scss
+++ b/app/assets/stylesheets/framework/variables.scss
@@ -56,6 +56,7 @@ $border-gray-light: #dcdcdc;
 $border-gray-normal: #d7d7d7;
 $border-gray-dark: #c6cacf;
 
+$border-green-extra-light: #9adb84;
 $border-green-light: #2faa60;
 $border-green-normal: #2ca05b;
 $border-green-dark: #279654;
diff --git a/app/assets/stylesheets/pages/detail_page.scss b/app/assets/stylesheets/pages/detail_page.scss
index 4d9c73c6840..2357671c2ae 100644
--- a/app/assets/stylesheets/pages/detail_page.scss
+++ b/app/assets/stylesheets/pages/detail_page.scss
@@ -20,9 +20,11 @@
 
 .detail-page-description {
   .title {
-    margin: 0;
-    font-size: 23px;
+    margin: 0 0 16px;
+    font-size: 2em;
     color: $gl-gray-dark;
+    padding: 0 0 0.3em;
+    border-bottom: 1px solid $white-dark;
   }
 
   .description {
diff --git a/app/assets/stylesheets/pages/merge_conflicts.scss b/app/assets/stylesheets/pages/merge_conflicts.scss
index 49013d7cac9..eed2b0ab7cc 100644
--- a/app/assets/stylesheets/pages/merge_conflicts.scss
+++ b/app/assets/stylesheets/pages/merge_conflicts.scss
@@ -237,4 +237,51 @@ $colors: (
   .btn-success .fa-spinner {
     color: #fff;
   }
+
+  .editor-wrap {
+    &.is-loading {
+      .editor {
+        display: none;
+      }
+
+      .loading {
+        display: block;
+      }
+    }
+
+    &.saved {
+      .editor {
+        border-top: solid 2px $border-green-extra-light;
+      }
+    }
+    
+    .editor {
+      pre {
+        height: 350px;
+        border: none;
+        border-radius: 0;
+        margin-bottom: 0;
+      }
+    }
+
+    .loading {
+      display: none;
+    }
+  }
+
+  .discard-changes-alert {
+    background-color: $background-color;
+    text-align: right;
+    padding: $gl-padding-top $gl-padding;
+    color: $gl-text-color;
+
+    .discard-actions {
+      display: inline-block;
+      margin-left: 10px;
+    }
+  }
+
+  .resolve-conflicts-form {
+    padding-top: $gl-padding;
+  }
 }
diff --git a/app/assets/stylesheets/pages/merge_requests.scss b/app/assets/stylesheets/pages/merge_requests.scss
index afc4e517fde..101472278e2 100644
--- a/app/assets/stylesheets/pages/merge_requests.scss
+++ b/app/assets/stylesheets/pages/merge_requests.scss
@@ -429,13 +429,6 @@
   }
 }
 
-.merge-request-details {
-
-  .title {
-    margin-bottom: 20px;
-  }
-}
-
 .merge-request-tabs {
   background-color: #fff;
 
diff --git a/app/assets/stylesheets/pages/tree.scss b/app/assets/stylesheets/pages/tree.scss
index 99c0f6362d0..6ea7a2b5498 100644
--- a/app/assets/stylesheets/pages/tree.scss
+++ b/app/assets/stylesheets/pages/tree.scss
@@ -169,4 +169,8 @@
   margin-top: 11px;
   position: relative;
   z-index: 2;
+
+  .download-button {
+    margin-left: $btn-side-margin;
+  }
 }
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 705824502eb..37600ed875c 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -118,7 +118,12 @@ class ApplicationController < ActionController::Base
   end
 
   def render_404
-    render file: Rails.root.join("public", "404"), layout: false, status: "404"
+    respond_to do |format|
+      format.html do
+        render file: Rails.root.join("public", "404"), layout: false, status: "404"
+      end
+      format.any { head :not_found }
+    end
   end
 
   def no_cache_headers
diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb
index 9207c954335..a39b47b6d95 100644
--- a/app/controllers/projects/merge_requests_controller.rb
+++ b/app/controllers/projects/merge_requests_controller.rb
@@ -9,15 +9,15 @@ class Projects::MergeRequestsController < Projects::ApplicationController
 
   before_action :module_enabled
   before_action :merge_request, only: [
-    :edit, :update, :show, :diffs, :commits, :conflicts, :builds, :pipelines, :merge, :merge_check,
+    :edit, :update, :show, :diffs, :commits, :conflicts, :conflict_for_path, :builds, :pipelines, :merge, :merge_check,
     :ci_status, :ci_environments_status, :toggle_subscription, :cancel_merge_when_build_succeeds, :remove_wip, :resolve_conflicts, :assign_related_issues
   ]
   before_action :validates_merge_request, only: [:show, :diffs, :commits, :builds, :pipelines]
-  before_action :define_show_vars, only: [:show, :diffs, :commits, :conflicts, :builds, :pipelines]
+  before_action :define_show_vars, only: [:show, :diffs, :commits, :conflicts, :conflict_for_path, :builds, :pipelines]
   before_action :define_widget_vars, only: [:merge, :cancel_merge_when_build_succeeds, :merge_check]
   before_action :define_commit_vars, only: [:diffs]
   before_action :define_diff_comment_vars, only: [:diffs]
-  before_action :ensure_ref_fetched, only: [:show, :diffs, :commits, :builds, :conflicts, :pipelines]
+  before_action :ensure_ref_fetched, only: [:show, :diffs, :commits, :builds, :conflicts, :conflict_for_path, :pipelines]
   before_action :close_merge_request_without_source_project, only: [:show, :diffs, :commits, :builds, :pipelines]
   before_action :apply_diff_view_cookie!, only: [:new_diffs]
   before_action :build_merge_request, only: [:new, :new_diffs]
@@ -33,7 +33,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
 
   before_action :authenticate_user!, only: [:assign_related_issues]
 
-  before_action :authorize_can_resolve_conflicts!, only: [:conflicts, :resolve_conflicts]
+  before_action :authorize_can_resolve_conflicts!, only: [:conflicts, :conflict_for_path, :resolve_conflicts]
 
   def index
     @merge_requests = merge_requests_collection
@@ -170,6 +170,16 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     end
   end
 
+  def conflict_for_path
+    return render_404 unless @merge_request.conflicts_can_be_resolved_in_ui?
+
+    file = @merge_request.conflicts.file_for_path(params[:old_path], params[:new_path])
+
+    return render_404 unless file
+
+    render json: file, full_content: true
+  end
+
   def resolve_conflicts
     return render_404 unless @merge_request.conflicts_can_be_resolved_in_ui?
 
@@ -184,7 +194,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
       flash[:notice] = 'All merge conflicts were resolved. The merge request can now be merged.'
 
       render json: { redirect_to: namespace_project_merge_request_url(@project.namespace, @project, @merge_request, resolved_conflicts: true) }
-    rescue Gitlab::Conflict::File::MissingResolution => e
+    rescue Gitlab::Conflict::ResolutionError => e
       render status: :bad_request, json: { message: e.message }
     end
   end
diff --git a/app/models/ci/pipeline.rb b/app/models/ci/pipeline.rb
index 4fdb5fef4fb..c7b9d6cc223 100644
--- a/app/models/ci/pipeline.rb
+++ b/app/models/ci/pipeline.rb
@@ -49,6 +49,10 @@ module Ci
         transition any => :canceled
       end
 
+      # IMPORTANT
+      # Do not add any operations to this state_machine
+      # Create a separate worker for each new operation
+
       before_transition [:created, :pending] => :running do |pipeline|
         pipeline.started_at = Time.now
       end
@@ -62,13 +66,11 @@ module Ci
       end
 
       after_transition [:created, :pending] => :running do |pipeline|
-        MergeRequest::Metrics.where(merge_request_id: pipeline.merge_requests.map(&:id)).
-          update_all(latest_build_started_at: pipeline.started_at, latest_build_finished_at: nil)
+        pipeline.run_after_commit { PipelineMetricsWorker.perform_async(id) }
       end
 
       after_transition any => [:success] do |pipeline|
-        MergeRequest::Metrics.where(merge_request_id: pipeline.merge_requests.map(&:id)).
-          update_all(latest_build_finished_at: pipeline.finished_at)
+        pipeline.run_after_commit { PipelineMetricsWorker.perform_async(id) }
       end
 
       after_transition [:created, :pending, :running] => :success do |pipeline|
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 5ccfe11a2a2..8c6905a442d 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -871,7 +871,7 @@ class MergeRequest < ActiveRecord::Base
       # files.
       conflicts.files.each(&:lines)
       @conflicts_can_be_resolved_in_ui = conflicts.files.length > 0
-    rescue Rugged::OdbError, Gitlab::Conflict::Parser::ParserError, Gitlab::Conflict::FileCollection::ConflictSideMissing
+    rescue Rugged::OdbError, Gitlab::Conflict::Parser::UnresolvableError, Gitlab::Conflict::FileCollection::ConflictSideMissing
       @conflicts_can_be_resolved_in_ui = false
     end
   end
diff --git a/app/services/merge_requests/resolve_service.rb b/app/services/merge_requests/resolve_service.rb
index 19caa038c44..d22a1d3e0ad 100644
--- a/app/services/merge_requests/resolve_service.rb
+++ b/app/services/merge_requests/resolve_service.rb
@@ -1,5 +1,8 @@
 module MergeRequests
   class ResolveService < MergeRequests::BaseService
+    class MissingFiles < Gitlab::Conflict::ResolutionError
+    end
+
     attr_accessor :conflicts, :rugged, :merge_index, :merge_request
 
     def execute(merge_request)
@@ -10,8 +13,16 @@ module MergeRequests
 
       fetch_their_commit!
 
-      conflicts.files.each do |file|
-        write_resolved_file_to_index(file, params[:sections])
+      params[:files].each do |file_params|
+        conflict_file = merge_request.conflicts.file_for_path(file_params[:old_path], file_params[:new_path])
+
+        write_resolved_file_to_index(conflict_file, file_params)
+      end
+
+      unless merge_index.conflicts.empty?
+        missing_files = merge_index.conflicts.map { |file| file[:ours][:path] }
+
+        raise MissingFiles, "Missing resolutions for the following files: #{missing_files.join(', ')}"
       end
 
       commit_params = {
@@ -23,8 +34,13 @@ module MergeRequests
       project.repository.resolve_conflicts(current_user, merge_request.source_branch, commit_params)
     end
 
-    def write_resolved_file_to_index(file, resolutions)
-      new_file = file.resolve_lines(resolutions).map(&:text).join("\n")
+    def write_resolved_file_to_index(file, params)
+      new_file = if params[:sections]
+                   file.resolve_lines(params[:sections]).map(&:text).join("\n")
+                 elsif params[:content]
+                   file.resolve_content(params[:content])
+                 end
+
       our_path = file.our_path
 
       merge_index.add(path: our_path, oid: rugged.write(new_file, :blob), mode: file.our_mode)
diff --git a/app/views/projects/buttons/_download.html.haml b/app/views/projects/buttons/_download.html.haml
index 9089586a89d..7e83a88913a 100644
--- a/app/views/projects/buttons/_download.html.haml
+++ b/app/views/projects/buttons/_download.html.haml
@@ -1,5 +1,5 @@
 - if !project.empty_repo? && can?(current_user, :download_code, project)
-  %span{class: 'hidden-xs hidden-sm'}
+  %span{class: 'hidden-xs hidden-sm download-button'}
     .dropdown.inline
       %button.btn{ 'data-toggle' => 'dropdown' }
         = icon('download')
diff --git a/app/views/projects/merge_requests/conflicts.html.haml b/app/views/projects/merge_requests/conflicts.html.haml
index a524936f73c..d9f74d2cbfb 100644
--- a/app/views/projects/merge_requests/conflicts.html.haml
+++ b/app/views/projects/merge_requests/conflicts.html.haml
@@ -1,11 +1,7 @@
-- class_bindings = "{ |
-    'head': line.isHead, |
-    'origin': line.isOrigin, |
-    'match': line.hasMatch, |
-    'selected': line.isSelected, |
-    'unselected': line.isUnselected }"
-
 - page_title "Merge Conflicts", "#{@merge_request.title} (#{@merge_request.to_reference}", "Merge Requests"
+- content_for :page_specific_javascripts do
+  = page_specific_javascript_tag('merge_conflicts/merge_conflicts_bundle.js')
+  = page_specific_javascript_tag('lib/ace.js')
 = render "projects/merge_requests/show/mr_title"
 
 .merge-request-details.issuable-details
@@ -24,6 +20,21 @@
   = render partial: "projects/merge_requests/conflicts/commit_stats"
 
   .files-wrapper{"v-if" => "!isLoading && !hasError"}
-    = render partial: "projects/merge_requests/conflicts/parallel_view", locals: { class_bindings: class_bindings }
-    = render partial: "projects/merge_requests/conflicts/inline_view", locals: { class_bindings: class_bindings }
+    .files
+      .diff-file.file-holder.conflict{"v-for" => "file in conflictsData.files"}
+        .file-title
+          %i.fa.fa-fw{":class" => "file.iconClass"}
+          %strong {{file.filePath}}
+          = render partial: 'projects/merge_requests/conflicts/file_actions'
+        .diff-content.diff-wrap-lines
+          .diff-wrap-lines.code.file-content.js-syntax-highlight{"v-show" => "!isParallel && file.resolveMode === 'interactive' && file.type === 'text'" }
+            = render partial: "projects/merge_requests/conflicts/components/inline_conflict_lines"
+          .diff-wrap-lines.code.file-content.js-syntax-highlight{"v-show" => "isParallel && file.resolveMode === 'interactive' && file.type === 'text'" }
+            = render partial: "projects/merge_requests/conflicts/components/parallel_conflict_lines"
+          %div{"v-show" => "file.resolveMode === 'edit' ||  file.type === 'text-editor'"}
+            = render partial: "projects/merge_requests/conflicts/components/diff_file_editor"
+
     = render partial: "projects/merge_requests/conflicts/submit_form"
+
+-# Components
+= render partial: 'projects/merge_requests/conflicts/components/parallel_conflict_line'
diff --git a/app/views/projects/merge_requests/conflicts/_commit_stats.html.haml b/app/views/projects/merge_requests/conflicts/_commit_stats.html.haml
index 457c467fba9..5ab3cd96163 100644
--- a/app/views/projects/merge_requests/conflicts/_commit_stats.html.haml
+++ b/app/views/projects/merge_requests/conflicts/_commit_stats.html.haml
@@ -1,20 +1,16 @@
 .content-block.oneline-block.files-changed{"v-if" => "!isLoading && !hasError"}
-  .inline-parallel-buttons
+  .inline-parallel-buttons{"v-if" => "showDiffViewTypeSwitcher"}
     .btn-group
-      %a.btn{ |
-        ":class" => "{'active': !isParallel}", |
-        "@click" => "handleViewTypeChange('inline')"}
+      %button.btn{":class" => "{'active': !isParallel}", "@click" => "handleViewTypeChange('inline')"}
         Inline
-      %a.btn{ |
-        ":class" => "{'active': isParallel}", |
-        "@click" => "handleViewTypeChange('parallel')"}
+      %button.btn{":class" => "{'active': isParallel}", "@click" => "handleViewTypeChange('parallel')"}
         Side-by-side
 
   .js-toggle-container
     .commit-stat-summary
       Showing
-      %strong.cred {{conflictsCount}} {{conflictsData.conflictsText}}
+      %strong.cred {{conflictsCountText}}
       between
-      %strong {{conflictsData.source_branch}}
+      %strong {{conflictsData.sourceBranch}}
       and
-      %strong {{conflictsData.target_branch}}
+      %strong {{conflictsData.targetBranch}}
diff --git a/app/views/projects/merge_requests/conflicts/_file_actions.html.haml b/app/views/projects/merge_requests/conflicts/_file_actions.html.haml
new file mode 100644
index 00000000000..05af57acf03
--- /dev/null
+++ b/app/views/projects/merge_requests/conflicts/_file_actions.html.haml
@@ -0,0 +1,12 @@
+.file-actions
+  .btn-group{"v-if" => "file.type === 'text'"}
+    %button.btn{ ":class" => "{ 'active': file.resolveMode == 'interactive' }",
+      '@click' => "onClickResolveModeButton(file, 'interactive')",
+      type: 'button' }
+      Interactive mode
+    %button.btn{ ':class' => "{ 'active': file.resolveMode == 'edit' }",
+      '@click' => "onClickResolveModeButton(file, 'edit')",
+      type: 'button' }
+      Edit inline
+  %a.btn.view-file.btn-file-option{":href" => "file.blobPath"}
+    View file @{{conflictsData.shortCommitSha}}
diff --git a/app/views/projects/merge_requests/conflicts/_inline_view.html.haml b/app/views/projects/merge_requests/conflicts/_inline_view.html.haml
deleted file mode 100644
index 19c7da4b5e3..00000000000
--- a/app/views/projects/merge_requests/conflicts/_inline_view.html.haml
+++ /dev/null
@@ -1,28 +0,0 @@
-.files{"v-show" => "!isParallel"}
-  .diff-file.file-holder.conflict.inline-view{"v-for" => "file in conflictsData.files"}
-    .file-title
-      %i.fa.fa-fw{":class" => "file.iconClass"}
-      %strong {{file.filePath}}
-      .file-actions
-        %a.btn.view-file.btn-file-option{":href" => "file.blobPath"}
-          View file @{{conflictsData.shortCommitSha}}
-
-    .diff-content.diff-wrap-lines
-      .diff-wrap-lines.code.file-content.js-syntax-highlight
-        %table
-          %tr.line_holder.diff-inline{"v-for" => "line in file.inlineLines"}
-            %template{"v-if" => "!line.isHeader"}
-              %td.diff-line-num.new_line{":class" => class_bindings}
-                %a {{line.new_line}}
-              %td.diff-line-num.old_line{":class" => class_bindings}
-                %a {{line.old_line}}
-              %td.line_content{":class" => class_bindings}
-                {{{line.richText}}}
-
-            %template{"v-if" => "line.isHeader"}
-              %td.diff-line-num.header{":class" => class_bindings}
-              %td.diff-line-num.header{":class" => class_bindings}
-              %td.line_content.header{":class" => class_bindings}
-                %strong {{{line.richText}}}
-                %button.btn{"@click" => "handleSelected(line.id, line.section)"}
-                  {{line.buttonTitle}}
diff --git a/app/views/projects/merge_requests/conflicts/_parallel_view.html.haml b/app/views/projects/merge_requests/conflicts/_parallel_view.html.haml
deleted file mode 100644
index 2e6f67c2eaf..00000000000
--- a/app/views/projects/merge_requests/conflicts/_parallel_view.html.haml
+++ /dev/null
@@ -1,27 +0,0 @@
-.files{"v-show" => "isParallel"}
-  .diff-file.file-holder.conflict.parallel-view{"v-for" => "file in conflictsData.files"}
-    .file-title
-      %i.fa.fa-fw{":class" => "file.iconClass"}
-      %strong {{file.filePath}}
-      .file-actions
-        %a.btn.view-file.btn-file-option{":href" => "file.blobPath"}
-          View file @{{conflictsData.shortCommitSha}}
-
-    .diff-content.diff-wrap-lines
-      .diff-wrap-lines.code.file-content.js-syntax-highlight
-        %table
-          %tr.line_holder.parallel{"v-for" => "section in file.parallelLines"}
-            %template{"v-for" => "line in section"}
-
-              %template{"v-if" => "line.isHeader"}
-                %td.diff-line-num.header{":class" => class_bindings}
-                %td.line_content.header{":class" => class_bindings}
-                  %strong {{line.richText}}
-                  %button.btn{"@click" => "handleSelected(line.id, line.section)"}
-                    {{line.buttonTitle}}
-
-              %template{"v-if" => "!line.isHeader"}
-                %td.diff-line-num.old_line{":class" => class_bindings}
-                  {{line.lineNumber}}
-                %td.line_content.parallel{":class" => class_bindings}
-                  {{{line.richText}}}
diff --git a/app/views/projects/merge_requests/conflicts/_submit_form.html.haml b/app/views/projects/merge_requests/conflicts/_submit_form.html.haml
index 78bd4133ea2..6ffaa9ad4d2 100644
--- a/app/views/projects/merge_requests/conflicts/_submit_form.html.haml
+++ b/app/views/projects/merge_requests/conflicts/_submit_form.html.haml
@@ -1,15 +1,16 @@
-.content-block.oneline-block.files-changed
-  %strong.resolved-count {{resolvedCount}}
-  of
-  %strong.total-count {{conflictsCount}}
-  conflicts have been resolved
-
-  .commit-message-container.form-group
-    .max-width-marker
-    %textarea.form-control.js-commit-message{"v-model" => "conflictsData.commitMessage"}
-      {{{conflictsData.commitMessage}}}
-
-  %button{type: "button", class: "btn btn-success js-submit-button", ":disabled" => "!readyToCommit", "@click" => "commit()"}
-    %span {{commitButtonText}}
-
-  = link_to "Cancel", namespace_project_merge_request_path(@merge_request.project.namespace, @merge_request.project, @merge_request), class: "btn btn-cancel"
+.form-horizontal.resolve-conflicts-form
+  .form-group
+    %label.col-sm-2.control-label{ "for" => "commit-message" }
+      Commit message
+    .col-sm-10
+      .commit-message-container
+        .max-width-marker
+        %textarea.form-control.js-commit-message#commit-message{ "v-model" => "conflictsData.commitMessage", "rows" => "5" }
+  .form-group
+    .col-sm-offset-2.col-sm-10
+      .row
+        .col-xs-6
+          %button{ type: "button", class: "btn btn-success js-submit-button", "@click" => "commit()", ":disabled" => "!readyToCommit" }
+            %span {{commitButtonText}}
+        .col-xs-6.text-right
+          = link_to "Cancel", namespace_project_merge_request_path(@merge_request.project.namespace, @merge_request.project, @merge_request), class: "btn btn-cancel"
diff --git a/app/views/projects/merge_requests/conflicts/components/_diff_file_editor.html.haml b/app/views/projects/merge_requests/conflicts/components/_diff_file_editor.html.haml
new file mode 100644
index 00000000000..3c927d362c2
--- /dev/null
+++ b/app/views/projects/merge_requests/conflicts/components/_diff_file_editor.html.haml
@@ -0,0 +1,13 @@
+%diff-file-editor{"inline-template" => "true", ":file" => "file", ":on-cancel-discard-confirmation" => "cancelDiscardConfirmation", ":on-accept-discard-confirmation" => "acceptDiscardConfirmation"}
+  .diff-editor-wrap{ "v-show" => "file.showEditor" }
+    .discard-changes-alert-wrap{ "v-if" => "file.promptDiscardConfirmation" }
+      .discard-changes-alert
+        Are you sure you want to discard your changes?
+        .discard-actions
+          %button.btn.btn-sm.btn-close{ "@click" => "acceptDiscardConfirmation(file)" } Discard changes
+          %button.btn.btn-sm{ "@click" => "cancelDiscardConfirmation(file)" } Cancel
+    .editor-wrap{ ":class" => "classObject" }
+      .loading
+        %i.fa.fa-spinner.fa-spin
+      .editor
+        %pre{ "style" => "height: 350px" }
diff --git a/app/views/projects/merge_requests/conflicts/components/_inline_conflict_lines.html.haml b/app/views/projects/merge_requests/conflicts/components/_inline_conflict_lines.html.haml
new file mode 100644
index 00000000000..f094df7fcaa
--- /dev/null
+++ b/app/views/projects/merge_requests/conflicts/components/_inline_conflict_lines.html.haml
@@ -0,0 +1,15 @@
+%inline-conflict-lines{ "inline-template" => "true", ":file" => "file"}
+  %table
+    %tr.line_holder.diff-inline{"v-for" => "line in file.inlineLines"}
+      %td.diff-line-num.new_line{":class" => "lineCssClass(line)", "v-if" => "!line.isHeader"}
+        %a {{line.new_line}}
+      %td.diff-line-num.old_line{":class" => "lineCssClass(line)", "v-if" => "!line.isHeader"}
+        %a {{line.old_line}}
+      %td.line_content{":class" => "lineCssClass(line)", "v-if" => "!line.isHeader"}
+        {{{line.richText}}}
+      %td.diff-line-num.header{":class" => "lineCssClass(line)", "v-if" => "line.isHeader"}
+      %td.diff-line-num.header{":class" => "lineCssClass(line)", "v-if" => "line.isHeader"}
+      %td.line_content.header{":class" => "lineCssClass(line)", "v-if" => "line.isHeader"}
+        %strong {{{line.richText}}}
+        %button.btn{ "@click" => "handleSelected(file, line.id, line.section)" }
+          {{line.buttonTitle}}
diff --git a/app/views/projects/merge_requests/conflicts/components/_parallel_conflict_line.html.haml b/app/views/projects/merge_requests/conflicts/components/_parallel_conflict_line.html.haml
new file mode 100644
index 00000000000..5690bf7419c
--- /dev/null
+++ b/app/views/projects/merge_requests/conflicts/components/_parallel_conflict_line.html.haml
@@ -0,0 +1,10 @@
+%script{"id" => 'parallel-conflict-line', "type" => "text/x-template"}
+  %td.diff-line-num.header{":class" => "lineCssClass(line)", "v-if" => "line.isHeader"}
+  %td.line_content.header{":class" => "lineCssClass(line)", "v-if" => "line.isHeader"}
+    %strong {{line.richText}}
+    %button.btn{"@click" => "handleSelected(file, line.id, line.section)"}
+      {{line.buttonTitle}}
+  %td.diff-line-num.old_line{":class" => "lineCssClass(line)", "v-if" => "!line.isHeader"}
+    {{line.lineNumber}}
+  %td.line_content.parallel{":class" => "lineCssClass(line)", "v-if" => "!line.isHeader"}
+    {{{line.richText}}}
diff --git a/app/views/projects/merge_requests/conflicts/components/_parallel_conflict_lines.html.haml b/app/views/projects/merge_requests/conflicts/components/_parallel_conflict_lines.html.haml
new file mode 100644
index 00000000000..a8ecdf59393
--- /dev/null
+++ b/app/views/projects/merge_requests/conflicts/components/_parallel_conflict_lines.html.haml
@@ -0,0 +1,4 @@
+%parallel-conflict-lines{"inline-template" => "true", ":file" => "file"}
+  %table
+    %tr.line_holder.parallel{"v-for" => "section in file.parallelLines"}
+      %td{"is"=>"parallel-conflict-line", "v-for" => "line in section", ":line" => "line", ":file" => "file"}
diff --git a/app/views/shared/issuable/_sidebar.html.haml b/app/views/shared/issuable/_sidebar.html.haml
index f8059988038..ba9f0c27661 100644
--- a/app/views/shared/issuable/_sidebar.html.haml
+++ b/app/views/shared/issuable/_sidebar.html.haml
@@ -171,5 +171,5 @@
       new LabelsSelect();
       new IssuableContext('#{escape_javascript(current_user.to_json(only: [:username, :id, :name]))}');
       new Subscription('.subscription')
-      new DueDateSelect();
+      new gl.DueDateSelectors();
       sidebar = new Sidebar();
diff --git a/app/workers/pipeline_metrics_worker.rb b/app/workers/pipeline_metrics_worker.rb
new file mode 100644
index 00000000000..7bb92df3bbd
--- /dev/null
+++ b/app/workers/pipeline_metrics_worker.rb
@@ -0,0 +1,30 @@
+class PipelineMetricsWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: :default
+
+  def perform(pipeline_id)
+    Ci::Pipeline.find_by(id: pipeline_id).try do |pipeline|
+      update_metrics_for_active_pipeline(pipeline) if pipeline.active?
+      update_metrics_for_succeeded_pipeline(pipeline) if pipeline.success?
+    end
+  end
+
+  private
+
+  def update_metrics_for_active_pipeline(pipeline)
+    metrics(pipeline).update_all(latest_build_started_at: pipeline.started_at, latest_build_finished_at: nil)
+  end
+
+  def update_metrics_for_succeeded_pipeline(pipeline)
+    metrics(pipeline).update_all(latest_build_started_at: pipeline.started_at, latest_build_finished_at: pipeline.finished_at)
+  end
+
+  def metrics(pipeline)
+    MergeRequest::Metrics.where(merge_request_id: merge_requests(pipeline))
+  end
+
+  def merge_requests(pipeline)
+    pipeline.merge_requests.map(&:id)
+  end
+end
diff --git a/config/application.rb b/config/application.rb
index 962ffe0708d..8a9c539cb43 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -89,6 +89,7 @@ module Gitlab
     config.assets.precompile << "profile/profile_bundle.js"
     config.assets.precompile << "diff_notes/diff_notes_bundle.js"
     config.assets.precompile << "boards/boards_bundle.js"
+    config.assets.precompile << "merge_conflicts/merge_conflicts_bundle.js"
     config.assets.precompile << "boards/test_utils/simulate_drag.js"
     config.assets.precompile << "blob_edit/blob_edit_bundle.js"
     config.assets.precompile << "snippet/snippet_bundle.js"
diff --git a/config/initializers/metrics.rb b/config/initializers/metrics.rb
index be22085b0df..3b8771543e4 100644
--- a/config/initializers/metrics.rb
+++ b/config/initializers/metrics.rb
@@ -67,6 +67,7 @@ if Gitlab::Metrics.enabled?
       ['app', 'finders']                    => ['app', 'finders'],
       ['app', 'mailers', 'emails']          => ['app', 'mailers'],
       ['app', 'services', '**']             => ['app', 'services'],
+      ['lib', 'gitlab', 'conflicts']        => ['lib'],
       ['lib', 'gitlab', 'diff']             => ['lib'],
       ['lib', 'gitlab', 'email', 'message'] => ['lib'],
       ['lib', 'gitlab', 'checks']           => ['lib']
diff --git a/config/routes/project.rb b/config/routes/project.rb
index 2cd8c60794a..711a59df744 100644
--- a/config/routes/project.rb
+++ b/config/routes/project.rb
@@ -267,6 +267,7 @@ resources :namespaces, path: '/', constraints: { id: /[a-zA-Z.0-9_\-]+/ }, only:
           get :commits
           get :diffs
           get :conflicts
+          get :conflict_for_path
           get :builds
           get :pipelines
           get :merge_check
diff --git a/config/routes/user.rb b/config/routes/user.rb
index dfb5d2a2ba4..0a9c924863d 100644
--- a/config/routes/user.rb
+++ b/config/routes/user.rb
@@ -1,8 +1,5 @@
 require 'constraints/user_url_constrainer'
 
-get '/u/:username', to: redirect('/%{username}'),
-                    constraints: { username: /[a-zA-Z.0-9_\-]+(?<!\.atom)/ }
-
 devise_for :users, controllers: { omniauth_callbacks: :omniauth_callbacks,
                                   registrations: :registrations,
                                   passwords: :passwords,
@@ -23,7 +20,7 @@ constraints(UserUrlConstrainer.new) do
   end
 end
 
-scope(path: 'u/:username',
+scope(path: 'users/:username',
       as: :user,
       constraints: { username: /[a-zA-Z.0-9_\-]+(?<!\.atom)/ },
       controller: :users) do
@@ -36,3 +33,12 @@ scope(path: 'u/:username',
   get :exists
   get '/', to: redirect('/%{username}')
 end
+
+# Compatibility with old routing
+# TODO (dzaporozhets): remove in 10.0
+get '/u/:username', to: redirect('/%{username}'), constraints: { username: /[a-zA-Z.0-9_\-]+(?<!\.atom)/ }
+# TODO (dzaporozhets): remove in 9.0
+get '/u/:username/groups', to: redirect('/users/%{username}/groups'), constraints: { username: /[a-zA-Z.0-9_\-]+/ }
+get '/u/:username/projects', to: redirect('/users/%{username}/projects'), constraints: { username: /[a-zA-Z.0-9_\-]+/ }
+get '/u/:username/snippets', to: redirect('/users/%{username}/snippets'), constraints: { username: /[a-zA-Z.0-9_\-]+/ }
+get '/u/:username/contributed', to: redirect('/users/%{username}/contributed'), constraints: { username: /[a-zA-Z.0-9_\-]+/ }
diff --git a/doc/api/award_emoji.md b/doc/api/award_emoji.md
index c464e3f3f71..06111f4ab67 100644
--- a/doc/api/award_emoji.md
+++ b/doc/api/award_emoji.md
@@ -43,7 +43,7 @@ Example Response:
       "id": 1,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-      "web_url": "http://gitlab.example.com/u/root"
+      "web_url": "http://gitlab.example.com/root"
     },
     "created_at": "2016-06-15T10:09:34.206Z",
     "updated_at": "2016-06-15T10:09:34.206Z",
@@ -59,7 +59,7 @@ Example Response:
       "id": 26,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/7e65550957227bd38fe2d7fbc6fd2f7b?s=80&d=identicon",
-      "web_url": "http://gitlab.example.com/u/user4"
+      "web_url": "http://gitlab.example.com/user4"
     },
     "created_at": "2016-06-15T10:09:34.177Z",
     "updated_at": "2016-06-15T10:09:34.177Z",
@@ -103,7 +103,7 @@ Example Response:
     "id": 26,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/7e65550957227bd38fe2d7fbc6fd2f7b?s=80&d=identicon",
-    "web_url": "http://gitlab.example.com/u/user4"
+    "web_url": "http://gitlab.example.com/user4"
   },
   "created_at": "2016-06-15T10:09:34.177Z",
   "updated_at": "2016-06-15T10:09:34.177Z",
@@ -146,7 +146,7 @@ Example Response:
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "http://gitlab.example.com/u/root"
+    "web_url": "http://gitlab.example.com/root"
   },
   "created_at": "2016-06-17T17:47:29.266Z",
   "updated_at": "2016-06-17T17:47:29.266Z",
@@ -190,7 +190,7 @@ Example Response:
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "http://gitlab.example.com/u/root"
+    "web_url": "http://gitlab.example.com/root"
   },
   "created_at": "2016-06-17T17:47:29.266Z",
   "updated_at": "2016-06-17T17:47:29.266Z",
@@ -238,7 +238,7 @@ Example Response:
       "id": 26,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/7e65550957227bd38fe2d7fbc6fd2f7b?s=80&d=identicon",
-      "web_url": "http://gitlab.example.com/u/user4"
+      "web_url": "http://gitlab.example.com/user4"
     },
     "created_at": "2016-06-15T10:09:34.197Z",
     "updated_at": "2016-06-15T10:09:34.197Z",
@@ -279,7 +279,7 @@ Example Response:
     "id": 26,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/7e65550957227bd38fe2d7fbc6fd2f7b?s=80&d=identicon",
-    "web_url": "http://gitlab.example.com/u/user4"
+    "web_url": "http://gitlab.example.com/user4"
   },
   "created_at": "2016-06-15T10:09:34.197Z",
   "updated_at": "2016-06-15T10:09:34.197Z",
@@ -319,7 +319,7 @@ Example Response:
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "http://gitlab.example.com/u/root"
+    "web_url": "http://gitlab.example.com/root"
   },
   "created_at": "2016-06-17T19:59:55.888Z",
   "updated_at": "2016-06-17T19:59:55.888Z",
@@ -362,7 +362,7 @@ Example Response:
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "http://gitlab.example.com/u/root"
+    "web_url": "http://gitlab.example.com/root"
   },
   "created_at": "2016-06-17T19:59:55.888Z",
   "updated_at": "2016-06-17T19:59:55.888Z",
diff --git a/doc/api/builds.md b/doc/api/builds.md
index e8a9e4743d3..e40f198696d 100644
--- a/doc/api/builds.md
+++ b/doc/api/builds.md
@@ -64,7 +64,7 @@ Example of response
       "state": "active",
       "twitter": "",
       "username": "root",
-      "web_url": "http://gitlab.dev/u/root",
+      "web_url": "http://gitlab.dev/root",
       "website_url": ""
     }
   },
@@ -108,7 +108,7 @@ Example of response
       "state": "active",
       "twitter": "",
       "username": "root",
-      "web_url": "http://gitlab.dev/u/root",
+      "web_url": "http://gitlab.dev/root",
       "website_url": ""
     }
   }
@@ -212,7 +212,7 @@ Example of response
       "state": "active",
       "twitter": "",
       "username": "root",
-      "web_url": "http://gitlab.dev/u/root",
+      "web_url": "http://gitlab.dev/root",
       "website_url": ""
     }
   }
@@ -279,7 +279,7 @@ Example of response
     "state": "active",
     "twitter": "",
     "username": "root",
-    "web_url": "http://gitlab.dev/u/root",
+    "web_url": "http://gitlab.dev/root",
     "website_url": ""
   }
 }
diff --git a/doc/api/commits.md b/doc/api/commits.md
index 3e20beefb8a..6e0882a94de 100644
--- a/doc/api/commits.md
+++ b/doc/api/commits.md
@@ -288,7 +288,7 @@ Example response:
 ```json
 {
    "author" : {
-      "web_url" : "https://gitlab.example.com/u/thedude",
+      "web_url" : "https://gitlab.example.com/thedude",
       "avatar_url" : "https://gitlab.example.com/uploads/user/avatar/28/The-Big-Lebowski-400-400.png",
       "username" : "thedude",
       "state" : "active",
@@ -343,7 +343,7 @@ Example response:
       "author" : {
          "username" : "thedude",
          "state" : "active",
-         "web_url" : "https://gitlab.example.com/u/thedude",
+         "web_url" : "https://gitlab.example.com/thedude",
          "avatar_url" : "https://gitlab.example.com/uploads/user/avatar/28/The-Big-Lebowski-400-400.png",
          "id" : 28,
          "name" : "Jeff Lebowski"
@@ -370,7 +370,7 @@ Example response:
          "id" : 28,
          "name" : "Jeff Lebowski",
          "username" : "thedude",
-         "web_url" : "https://gitlab.example.com/u/thedude",
+         "web_url" : "https://gitlab.example.com/thedude",
          "state" : "active",
          "avatar_url" : "https://gitlab.example.com/uploads/user/avatar/28/The-Big-Lebowski-400-400.png"
       },
@@ -408,7 +408,7 @@ Example response:
 ```json
 {
    "author" : {
-      "web_url" : "https://gitlab.example.com/u/thedude",
+      "web_url" : "https://gitlab.example.com/thedude",
       "name" : "Jeff Lebowski",
       "avatar_url" : "https://gitlab.example.com/uploads/user/avatar/28/The-Big-Lebowski-400-400.png",
       "username" : "thedude",
diff --git a/doc/api/deployments.md b/doc/api/deployments.md
index 417962de82d..3d95c4cde60 100644
--- a/doc/api/deployments.md
+++ b/doc/api/deployments.md
@@ -56,7 +56,7 @@ Example of response
         "state": "active",
         "twitter": "",
         "username": "root",
-        "web_url": "http://localhost:3000/u/root",
+        "web_url": "http://localhost:3000/root",
         "website_url": ""
       }
     },
@@ -75,7 +75,7 @@ Example of response
       "name": "Administrator",
       "state": "active",
       "username": "root",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     }
   },
   {
@@ -114,7 +114,7 @@ Example of response
         "state": "active",
         "twitter": "",
         "username": "root",
-        "web_url": "http://localhost:3000/u/root",
+        "web_url": "http://localhost:3000/root",
         "website_url": ""
       }
     },
@@ -133,7 +133,7 @@ Example of response
       "name": "Administrator",
       "state": "active",
       "username": "root",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     }
   }
 ]
@@ -169,7 +169,7 @@ Example of response
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "http://localhost:3000/u/root"
+    "web_url": "http://localhost:3000/root"
   },
   "environment": {
     "id": 9,
@@ -193,7 +193,7 @@ Example of response
       "id": 1,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-      "web_url": "http://localhost:3000/u/root",
+      "web_url": "http://localhost:3000/root",
       "created_at": "2016-08-11T07:09:20.351Z",
       "is_admin": true,
       "bio": null,
diff --git a/doc/api/issues.md b/doc/api/issues.md
index eed0d2fce51..134263d27b4 100644
--- a/doc/api/issues.md
+++ b/doc/api/issues.md
@@ -46,7 +46,7 @@ Example response:
       "author" : {
          "state" : "active",
          "id" : 18,
-         "web_url" : "https://gitlab.example.com/u/eileen.lowe",
+         "web_url" : "https://gitlab.example.com/eileen.lowe",
          "name" : "Alexandra Bashirian",
          "avatar_url" : null,
          "username" : "eileen.lowe"
@@ -67,7 +67,7 @@ Example response:
          "state" : "active",
          "id" : 1,
          "name" : "Administrator",
-         "web_url" : "https://gitlab.example.com/u/root",
+         "web_url" : "https://gitlab.example.com/root",
          "avatar_url" : null,
          "username" : "root"
       },
@@ -134,7 +134,7 @@ Example response:
       },
       "author" : {
          "state" : "active",
-         "web_url" : "https://gitlab.example.com/u/root",
+         "web_url" : "https://gitlab.example.com/root",
          "avatar_url" : null,
          "username" : "root",
          "id" : 1,
@@ -145,7 +145,7 @@ Example response:
       "iid" : 1,
       "assignee" : {
          "avatar_url" : null,
-         "web_url" : "https://gitlab.example.com/u/lennie",
+         "web_url" : "https://gitlab.example.com/lennie",
          "state" : "active",
          "username" : "lennie",
          "id" : 9,
@@ -215,7 +215,7 @@ Example response:
       },
       "author" : {
          "state" : "active",
-         "web_url" : "https://gitlab.example.com/u/root",
+         "web_url" : "https://gitlab.example.com/root",
          "avatar_url" : null,
          "username" : "root",
          "id" : 1,
@@ -226,7 +226,7 @@ Example response:
       "iid" : 1,
       "assignee" : {
          "avatar_url" : null,
-         "web_url" : "https://gitlab.example.com/u/lennie",
+         "web_url" : "https://gitlab.example.com/lennie",
          "state" : "active",
          "username" : "lennie",
          "id" : 9,
@@ -281,7 +281,7 @@ Example response:
    },
    "author" : {
       "state" : "active",
-      "web_url" : "https://gitlab.example.com/u/root",
+      "web_url" : "https://gitlab.example.com/root",
       "avatar_url" : null,
       "username" : "root",
       "id" : 1,
@@ -292,7 +292,7 @@ Example response:
    "iid" : 1,
    "assignee" : {
       "avatar_url" : null,
-      "web_url" : "https://gitlab.example.com/u/lennie",
+      "web_url" : "https://gitlab.example.com/lennie",
       "state" : "active",
       "username" : "lennie",
       "id" : 9,
@@ -357,7 +357,7 @@ Example response:
       "name" : "Alexandra Bashirian",
       "avatar_url" : null,
       "state" : "active",
-      "web_url" : "https://gitlab.example.com/u/eileen.lowe",
+      "web_url" : "https://gitlab.example.com/eileen.lowe",
       "id" : 18,
       "username" : "eileen.lowe"
    },
@@ -414,7 +414,7 @@ Example response:
       "username" : "eileen.lowe",
       "id" : 18,
       "state" : "active",
-      "web_url" : "https://gitlab.example.com/u/eileen.lowe"
+      "web_url" : "https://gitlab.example.com/eileen.lowe"
    },
    "state" : "closed",
    "title" : "Issues with auth",
@@ -500,7 +500,7 @@ Example response:
     "id": 12,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/axel.block"
+    "web_url": "https://gitlab.example.com/axel.block"
   },
   "author": {
     "name": "Kris Steuber",
@@ -508,7 +508,7 @@ Example response:
     "id": 10,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/7a190fecbaa68212a4b68aeb6e3acd10?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/solon.cremin"
+    "web_url": "https://gitlab.example.com/solon.cremin"
   },
   "due_date": null,
   "web_url": "http://example.com/example/example/issues/11",
@@ -557,7 +557,7 @@ Example response:
     "id": 12,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/axel.block"
+    "web_url": "https://gitlab.example.com/axel.block"
   },
   "author": {
     "name": "Kris Steuber",
@@ -565,7 +565,7 @@ Example response:
     "id": 10,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/7a190fecbaa68212a4b68aeb6e3acd10?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/solon.cremin"
+    "web_url": "https://gitlab.example.com/solon.cremin"
   },
   "due_date": null,
   "web_url": "http://example.com/example/example/issues/11",
@@ -614,7 +614,7 @@ Example response:
     "id": 21,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/3e6f06a86cf27fa8b56f3f74f7615987?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/keyon"
+    "web_url": "https://gitlab.example.com/keyon"
   },
   "author": {
     "name": "Vivian Hermann",
@@ -622,7 +622,7 @@ Example response:
     "id": 11,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/5224fd70153710e92fb8bcf79ac29d67?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/orville"
+    "web_url": "https://gitlab.example.com/orville"
   },
   "subscribed": false,
   "due_date": null,
@@ -669,7 +669,7 @@ Example response:
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/root"
+    "web_url": "https://gitlab.example.com/root"
   },
   "action_name": "marked",
   "target_type": "Issue",
@@ -700,7 +700,7 @@ Example response:
       "id": 14,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/a7fa515d53450023c83d62986d0658a8?s=80&d=identicon",
-      "web_url": "https://gitlab.example.com/u/francisca"
+      "web_url": "https://gitlab.example.com/francisca"
     },
     "author": {
       "name": "Maxie Medhurst",
@@ -708,7 +708,7 @@ Example response:
       "id": 12,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/a0d477b3ea21970ce6ffcbb817b0b435?s=80&d=identicon",
-      "web_url": "https://gitlab.example.com/u/craig_rutherford"
+      "web_url": "https://gitlab.example.com/craig_rutherford"
     },
     "subscribed": true,
     "user_notes_count": 7,
diff --git a/doc/api/keys.md b/doc/api/keys.md
index faa6f212b43..b68f08a007d 100644
--- a/doc/api/keys.md
+++ b/doc/api/keys.md
@@ -24,7 +24,7 @@ Parameters:
     "id": 25,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/cfa35b8cd2ec278026357769582fa563?s=40\u0026d=identicon",
-    "web_url": "http://localhost:3000/u/john_smith",
+    "web_url": "http://localhost:3000/john_smith",
     "created_at": "2015-09-03T07:24:01.670Z",
     "is_admin": false,
     "bio": null,
diff --git a/doc/api/merge_requests.md b/doc/api/merge_requests.md
index 494040a1ce8..f4167403c2c 100644
--- a/doc/api/merge_requests.md
+++ b/doc/api/merge_requests.md
@@ -621,7 +621,7 @@ Example response when the GitLab issue tracker is used:
       "author" : {
          "state" : "active",
          "id" : 18,
-         "web_url" : "https://gitlab.example.com/u/eileen.lowe",
+         "web_url" : "https://gitlab.example.com/eileen.lowe",
          "name" : "Alexandra Bashirian",
          "avatar_url" : null,
          "username" : "eileen.lowe"
@@ -642,7 +642,7 @@ Example response when the GitLab issue tracker is used:
          "state" : "active",
          "id" : 1,
          "name" : "Administrator",
-         "web_url" : "https://gitlab.example.com/u/root",
+         "web_url" : "https://gitlab.example.com/root",
          "avatar_url" : null,
          "username" : "root"
       },
@@ -711,7 +711,7 @@ Example response:
     "id": 19,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/39ce4a2822cc896933ffbd68c1470e55?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/leila"
+    "web_url": "https://gitlab.example.com/leila"
   },
   "assignee": {
     "name": "Celine Wehner",
@@ -719,7 +719,7 @@ Example response:
     "id": 16,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/f4cd5605b769dd2ce405a27c6e6f2684?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/carli"
+    "web_url": "https://gitlab.example.com/carli"
   },
   "source_project_id": 5,
   "target_project_id": 5,
@@ -787,7 +787,7 @@ Example response:
     "id": 19,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/39ce4a2822cc896933ffbd68c1470e55?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/leila"
+    "web_url": "https://gitlab.example.com/leila"
   },
   "assignee": {
     "name": "Celine Wehner",
@@ -795,7 +795,7 @@ Example response:
     "id": 16,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/f4cd5605b769dd2ce405a27c6e6f2684?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/carli"
+    "web_url": "https://gitlab.example.com/carli"
   },
   "source_project_id": 5,
   "target_project_id": 5,
@@ -858,7 +858,7 @@ Example response:
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/root"
+    "web_url": "https://gitlab.example.com/root"
   },
   "action_name": "marked",
   "target_type": "MergeRequest",
@@ -881,7 +881,7 @@ Example response:
       "id": 14,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/a7fa515d53450023c83d62986d0658a8?s=80&d=identicon",
-      "web_url": "https://gitlab.example.com/u/francisca"
+      "web_url": "https://gitlab.example.com/francisca"
     },
     "assignee": {
       "name": "Dr. Gabrielle Strosin",
@@ -889,7 +889,7 @@ Example response:
       "id": 4,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/733005fcd7e6df12d2d8580171ccb966?s=80&d=identicon",
-      "web_url": "https://gitlab.example.com/u/barrett.krajcik"
+      "web_url": "https://gitlab.example.com/barrett.krajcik"
     },
     "source_project_id": 3,
     "target_project_id": 3,
diff --git a/doc/api/notes.md b/doc/api/notes.md
index 572844b8b3f..58d40eecf3e 100644
--- a/doc/api/notes.md
+++ b/doc/api/notes.md
@@ -143,7 +143,7 @@ Example Response:
     "state": "active",
     "created_at": "2013-09-30T13:46:01Z",
     "avatar_url": "http://www.gravatar.com/avatar/5224fd70153710e92fb8bcf79ac29d67?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/pipin"
+    "web_url": "https://gitlab.example.com/pipin"
   },
   "created_at": "2016-04-05T22:10:44.164Z",
   "system": false,
@@ -268,7 +268,7 @@ Example Response:
     "state": "active",
     "created_at": "2013-09-30T13:46:01Z",
     "avatar_url": "http://www.gravatar.com/avatar/5224fd70153710e92fb8bcf79ac29d67?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/pipin"
+    "web_url": "https://gitlab.example.com/pipin"
   },
   "created_at": "2016-04-06T16:51:53.239Z",
   "system": false,
@@ -398,7 +398,7 @@ Example Response:
     "state": "active",
     "created_at": "2013-09-30T13:46:01Z",
     "avatar_url": "http://www.gravatar.com/avatar/5224fd70153710e92fb8bcf79ac29d67?s=80&d=identicon",
-    "web_url": "https://gitlab.example.com/u/pipin"
+    "web_url": "https://gitlab.example.com/pipin"
   },
   "created_at": "2016-04-05T22:11:59.923Z",
   "system": false,
diff --git a/doc/api/pipelines.md b/doc/api/pipelines.md
index 847408a7f61..a29b3eb6f44 100644
--- a/doc/api/pipelines.md
+++ b/doc/api/pipelines.md
@@ -34,7 +34,7 @@ Example of response
       "id": 1,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "created_at": "2016-08-16T10:23:19.007Z",
     "updated_at": "2016-08-16T10:23:19.216Z",
@@ -57,7 +57,7 @@ Example of response
       "id": 1,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "created_at": "2016-08-16T10:23:21.184Z",
     "updated_at": "2016-08-16T10:23:21.314Z",
@@ -103,7 +103,7 @@ Example of response
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "http://localhost:3000/u/root"
+    "web_url": "http://localhost:3000/root"
   },
   "created_at": "2016-08-11T11:28:34.085Z",
   "updated_at": "2016-08-11T11:32:35.169Z",
@@ -148,7 +148,7 @@ Response:
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "http://localhost:3000/u/root"
+    "web_url": "http://localhost:3000/root"
   },
   "created_at": "2016-08-11T11:28:34.085Z",
   "updated_at": "2016-08-11T11:32:35.169Z",
@@ -193,7 +193,7 @@ Response:
     "id": 1,
     "state": "active",
     "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-    "web_url": "http://localhost:3000/u/root"
+    "web_url": "http://localhost:3000/root"
   },
   "created_at": "2016-08-11T11:28:34.085Z",
   "updated_at": "2016-08-11T11:32:35.169Z",
diff --git a/doc/api/projects.md b/doc/api/projects.md
index f96bf7f6d63..b7791b4748a 100644
--- a/doc/api/projects.md
+++ b/doc/api/projects.md
@@ -465,7 +465,7 @@ Parameters:
       "id": 1,
       "state": "active",
       "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "author_username": "root"
   },
@@ -482,7 +482,7 @@ Parameters:
       "id": 1,
       "state": "active",
       "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "author_username": "john",
     "data": {
@@ -528,7 +528,7 @@ Parameters:
       "id": 1,
       "state": "active",
       "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "author_username": "root"
   },
@@ -552,7 +552,7 @@ Parameters:
         "id": 1,
         "state": "active",
         "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-        "web_url": "http://localhost:3000/u/root"
+        "web_url": "http://localhost:3000/root"
       },
       "created_at": "2015-12-04T10:33:56.698Z",
       "system": false,
@@ -567,7 +567,7 @@ Parameters:
       "id": 1,
       "state": "active",
       "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "author_username": "root"
   }
diff --git a/doc/api/todos.md b/doc/api/todos.md
index 0cd644dfd2f..a5e81801024 100644
--- a/doc/api/todos.md
+++ b/doc/api/todos.md
@@ -44,7 +44,7 @@ Example Response:
       "id": 1,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-      "web_url": "https://gitlab.example.com/u/root"
+      "web_url": "https://gitlab.example.com/root"
     },
     "action_name": "marked",
     "target_type": "MergeRequest",
@@ -67,7 +67,7 @@ Example Response:
         "id": 12,
         "state": "active",
         "avatar_url": "http://www.gravatar.com/avatar/a0d477b3ea21970ce6ffcbb817b0b435?s=80&d=identicon",
-        "web_url": "https://gitlab.example.com/u/craig_rutherford"
+        "web_url": "https://gitlab.example.com/craig_rutherford"
       },
       "assignee": {
         "name": "Administrator",
@@ -75,7 +75,7 @@ Example Response:
         "id": 1,
         "state": "active",
         "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-        "web_url": "https://gitlab.example.com/u/root"
+        "web_url": "https://gitlab.example.com/root"
       },
       "source_project_id": 2,
       "target_project_id": 2,
@@ -117,7 +117,7 @@ Example Response:
       "id": 12,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/a0d477b3ea21970ce6ffcbb817b0b435?s=80&d=identicon",
-      "web_url": "https://gitlab.example.com/u/craig_rutherford"
+      "web_url": "https://gitlab.example.com/craig_rutherford"
     },
     "action_name": "assigned",
     "target_type": "MergeRequest",
@@ -140,7 +140,7 @@ Example Response:
         "id": 12,
         "state": "active",
         "avatar_url": "http://www.gravatar.com/avatar/a0d477b3ea21970ce6ffcbb817b0b435?s=80&d=identicon",
-        "web_url": "https://gitlab.example.com/u/craig_rutherford"
+        "web_url": "https://gitlab.example.com/craig_rutherford"
       },
       "assignee": {
         "name": "Administrator",
@@ -148,7 +148,7 @@ Example Response:
         "id": 1,
         "state": "active",
         "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-        "web_url": "https://gitlab.example.com/u/root"
+        "web_url": "https://gitlab.example.com/root"
       },
       "source_project_id": 2,
       "target_project_id": 2,
@@ -215,7 +215,7 @@ Example Response:
       "id": 1,
       "state": "active",
       "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-      "web_url": "https://gitlab.example.com/u/root"
+      "web_url": "https://gitlab.example.com/root"
     },
     "action_name": "marked",
     "target_type": "MergeRequest",
@@ -238,7 +238,7 @@ Example Response:
         "id": 12,
         "state": "active",
         "avatar_url": "http://www.gravatar.com/avatar/a0d477b3ea21970ce6ffcbb817b0b435?s=80&d=identicon",
-        "web_url": "https://gitlab.example.com/u/craig_rutherford"
+        "web_url": "https://gitlab.example.com/craig_rutherford"
       },
       "assignee": {
         "name": "Administrator",
@@ -246,7 +246,7 @@ Example Response:
         "id": 1,
         "state": "active",
         "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
-        "web_url": "https://gitlab.example.com/u/root"
+        "web_url": "https://gitlab.example.com/root"
       },
       "source_project_id": 2,
       "target_project_id": 2,
diff --git a/doc/api/users.md b/doc/api/users.md
index a52b2d51d78..2b12770d5a5 100644
--- a/doc/api/users.md
+++ b/doc/api/users.md
@@ -20,7 +20,7 @@ GET /users
     "name": "John Smith",
     "state": "active",
     "avatar_url": "http://localhost:3000/uploads/user/avatar/1/cd8.jpeg",
-    "web_url": "http://localhost:3000/u/john_smith"
+    "web_url": "http://localhost:3000/john_smith"
   },
   {
     "id": 2,
@@ -28,7 +28,7 @@ GET /users
     "name": "Jack Smith",
     "state": "blocked",
     "avatar_url": "http://gravatar.com/../e32131cd8.jpeg",
-    "web_url": "http://localhost:3000/u/jack_smith"
+    "web_url": "http://localhost:3000/jack_smith"
   }
 ]
 ```
@@ -48,7 +48,7 @@ GET /users
     "name": "John Smith",
     "state": "active",
     "avatar_url": "http://localhost:3000/uploads/user/avatar/1/index.jpg",
-    "web_url": "http://localhost:3000/u/john_smith",
+    "web_url": "http://localhost:3000/john_smith",
     "created_at": "2012-05-23T08:00:58Z",
     "is_admin": false,
     "bio": null,
@@ -81,7 +81,7 @@ GET /users
     "name": "Jack Smith",
     "state": "blocked",
     "avatar_url": "http://localhost:3000/uploads/user/avatar/2/index.jpg",
-    "web_url": "http://localhost:3000/u/jack_smith",
+    "web_url": "http://localhost:3000/jack_smith",
     "created_at": "2012-05-23T08:01:01Z",
     "is_admin": false,
     "bio": null,
@@ -141,7 +141,7 @@ Parameters:
   "name": "John Smith",
   "state": "active",
   "avatar_url": "http://localhost:3000/uploads/user/avatar/1/cd8.jpeg",
-  "web_url": "http://localhost:3000/u/john_smith",
+  "web_url": "http://localhost:3000/john_smith",
   "created_at": "2012-05-23T08:00:58Z",
   "is_admin": false,
   "bio": null,
@@ -172,7 +172,7 @@ Parameters:
   "name": "John Smith",
   "state": "active",
   "avatar_url": "http://localhost:3000/uploads/user/avatar/1/index.jpg",
-  "web_url": "http://localhost:3000/u/john_smith",
+  "web_url": "http://localhost:3000/john_smith",
   "created_at": "2012-05-23T08:00:58Z",
   "is_admin": false,
   "bio": null,
@@ -293,7 +293,7 @@ GET /user
   "name": "John Smith",
   "state": "active",
   "avatar_url": "http://localhost:3000/uploads/user/avatar/1/index.jpg",
-  "web_url": "http://localhost:3000/u/john_smith",
+  "web_url": "http://localhost:3000/john_smith",
   "created_at": "2012-05-23T08:00:58Z",
   "is_admin": false,
   "bio": null,
@@ -665,7 +665,7 @@ Example response:
       "id": 1,
       "state": "active",
       "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "author_username": "root"
   },
@@ -682,7 +682,7 @@ Example response:
       "id": 1,
       "state": "active",
       "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "author_username": "john",
     "data": {
@@ -728,7 +728,7 @@ Example response:
       "id": 1,
       "state": "active",
       "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "author_username": "root"
   },
@@ -752,7 +752,7 @@ Example response:
         "id": 1,
         "state": "active",
         "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-        "web_url": "http://localhost:3000/u/root"
+        "web_url": "http://localhost:3000/root"
       },
       "created_at": "2015-12-04T10:33:56.698Z",
       "system": false,
@@ -767,7 +767,7 @@ Example response:
       "id": 1,
       "state": "active",
       "avatar_url": "http://localhost:3000/uploads/user/avatar/1/fox_avatar.png",
-      "web_url": "http://localhost:3000/u/root"
+      "web_url": "http://localhost:3000/root"
     },
     "author_username": "root"
   }
diff --git a/doc/development/performance.md b/doc/development/performance.md
index 65d34829025..c4a964d1da3 100644
--- a/doc/development/performance.md
+++ b/doc/development/performance.md
@@ -254,5 +254,5 @@ impact on runtime performance, and as such, using a constant instead of
 referencing an object directly may even slow code down.
 
 [#15607]: https://gitlab.com/gitlab-org/gitlab-ce/issues/15607
-[yorickpeterse]: https://gitlab.com/u/yorickpeterse
+[yorickpeterse]: https://gitlab.com/yorickpeterse
 [anti-pattern]: https://en.wikipedia.org/wiki/Anti-pattern
diff --git a/doc/raketasks/backup_hrz.png b/doc/raketasks/backup_hrz.png
index 42084717ebe..287587609a1 100644
--- a/doc/raketasks/backup_hrz.png
+++ b/doc/raketasks/backup_hrz.png
diff --git a/features/explore/projects.feature b/features/explore/projects.feature
index 092e18d1b86..4e0f4486ab7 100644
--- a/features/explore/projects.feature
+++ b/features/explore/projects.feature
@@ -128,6 +128,7 @@ Feature: Explore Projects
     And project "Archive" has comments
     And I sign in as a user
     And project "Community" has comments
+    And trending projects are refreshed
     When I visit the explore trending projects
     Then I should see project "Community"
     And I should not see project "Internal"
diff --git a/features/steps/project/commits/commits.rb b/features/steps/project/commits/commits.rb
index b08912de25f..244306e8464 100644
--- a/features/steps/project/commits/commits.rb
+++ b/features/steps/project/commits/commits.rb
@@ -21,7 +21,7 @@ class Spinach::Features::ProjectCommits < Spinach::FeatureSteps
     expect(response_headers['Content-Type']).to have_content("application/atom+xml")
     expect(body).to have_selector("title", text: "#{@project.name}:master commits")
     expect(body).to have_selector("author email", text: commit.author_email)
-    expect(body).to have_selector("entry summary", text: commit.description[0..10])
+    expect(body).to have_selector("entry summary", text: commit.description[0..10].delete("\r"))
   end
 
   step 'I click on tag link' do
diff --git a/features/steps/project/merge_requests.rb b/features/steps/project/merge_requests.rb
index de065dffbc2..44346d99f44 100644
--- a/features/steps/project/merge_requests.rb
+++ b/features/steps/project/merge_requests.rb
@@ -512,6 +512,7 @@ class Spinach::Features::ProjectMergeRequests < Spinach::FeatureSteps
   step 'I should see new target branch changes' do
     expect(page).to have_content 'Request to merge fix into feature'
     expect(page).to have_content 'Target branch changed from merge-test to feature'
+    wait_for_ajax
   end
 
   step 'I click on "Email Patches"' do
diff --git a/features/steps/shared/project.rb b/features/steps/shared/project.rb
index afbd8ef1233..cab85a48396 100644
--- a/features/steps/shared/project.rb
+++ b/features/steps/shared/project.rb
@@ -218,6 +218,10 @@ module SharedProject
     2.times { create(:note_on_issue, project: project) }
   end
 
+  step 'trending projects are refreshed' do
+    TrendingProject.refresh!
+  end
+
   step 'project "Shop" has labels: "bug", "feature", "enhancement"' do
     project = Project.find_by(name: "Shop")
     create(:label, project: project, title: 'bug')
diff --git a/lib/banzai/filter/set_direction_filter.rb b/lib/banzai/filter/set_direction_filter.rb
new file mode 100644
index 00000000000..c2976aeb7c6
--- /dev/null
+++ b/lib/banzai/filter/set_direction_filter.rb
@@ -0,0 +1,15 @@
+module Banzai
+  module Filter
+    # HTML filter that sets dir="auto" for RTL languages support
+    class SetDirectionFilter < HTML::Pipeline::Filter
+      def call
+        # select these elements just on top level of the document
+        doc.xpath('p|h1|h2|h3|h4|h5|h6|ol|ul[not(@class="section-nav")]|blockquote|table').each do |el|
+          el['dir'] = 'auto'
+        end
+
+        doc
+      end
+    end
+  end
+end
diff --git a/lib/banzai/pipeline/gfm_pipeline.rb b/lib/banzai/pipeline/gfm_pipeline.rb
index 8d94b199c66..5da2d0b008c 100644
--- a/lib/banzai/pipeline/gfm_pipeline.rb
+++ b/lib/banzai/pipeline/gfm_pipeline.rb
@@ -25,7 +25,9 @@ module Banzai
           Filter::MilestoneReferenceFilter,
 
           Filter::TaskListFilter,
-          Filter::InlineDiffFilter
+          Filter::InlineDiffFilter,
+
+          Filter::SetDirectionFilter
         ]
       end
 
diff --git a/lib/gitlab/conflict/file.rb b/lib/gitlab/conflict/file.rb
index dff9e29c6a5..c843315782d 100644
--- a/lib/gitlab/conflict/file.rb
+++ b/lib/gitlab/conflict/file.rb
@@ -4,7 +4,7 @@ module Gitlab
       include Gitlab::Routing.url_helpers
       include IconsHelper
 
-      class MissingResolution < StandardError
+      class MissingResolution < ResolutionError
       end
 
       CONTEXT_LINES = 3
@@ -21,12 +21,34 @@ module Gitlab
         @match_line_headers = {}
       end
 
+      def content
+        merge_file_result[:data]
+      end
+
+      def our_blob
+        @our_blob ||= repository.blob_at(merge_request.diff_refs.head_sha, our_path)
+      end
+
+      def type
+        lines unless @type
+
+        @type.inquiry
+      end
+
       # Array of Gitlab::Diff::Line objects
       def lines
-        @lines ||= Gitlab::Conflict::Parser.new.parse(merge_file_result[:data],
+        return @lines if defined?(@lines)
+
+        begin
+          @type = 'text'
+          @lines = Gitlab::Conflict::Parser.new.parse(content,
                                                       our_path: our_path,
                                                       their_path: their_path,
                                                       parent_file: self)
+        rescue Gitlab::Conflict::Parser::ParserError
+          @type = 'text-editor'
+          @lines = nil
+        end
       end
 
       def resolve_lines(resolution)
@@ -53,6 +75,14 @@ module Gitlab
         end.compact
       end
 
+      def resolve_content(resolution)
+        if resolution == content
+          raise MissingResolution, "Resolved content has no changes for file #{our_path}"
+        end
+
+        resolution
+      end
+
       def highlight_lines!
         their_file = lines.reject { |line| line.type == 'new' }.map(&:text).join("\n")
         our_file = lines.reject { |line| line.type == 'old' }.map(&:text).join("\n")
@@ -170,21 +200,39 @@ module Gitlab
         match_line.text = "@@ -#{match_line.old_pos},#{line.old_pos} +#{match_line.new_pos},#{line.new_pos} @@#{header}"
       end
 
-      def as_json(opts = nil)
-        {
+      def as_json(opts = {})
+        json_hash = {
           old_path: their_path,
           new_path: our_path,
           blob_icon: file_type_icon_class('file', our_mode, our_path),
           blob_path: namespace_project_blob_path(merge_request.project.namespace,
                                                  merge_request.project,
-                                                 ::File.join(merge_request.diff_refs.head_sha, our_path)),
-          sections: sections
+                                                 ::File.join(merge_request.diff_refs.head_sha, our_path))
         }
+
+        json_hash.tap do |json_hash|
+          if opts[:full_content]
+            json_hash[:content] = content
+            json_hash[:blob_ace_mode] = our_blob && our_blob.language.try(:ace_mode)
+          else
+            json_hash[:sections] = sections if type.text?
+            json_hash[:type] = type
+            json_hash[:content_path] = content_path
+          end
+        end
+      end
+
+      def content_path
+        conflict_for_path_namespace_project_merge_request_path(merge_request.project.namespace,
+                                                               merge_request.project,
+                                                               merge_request,
+                                                               old_path: their_path,
+                                                               new_path: our_path)
       end
 
       # Don't try to print merge_request or repository.
       def inspect
-        instance_variables = [:merge_file_result, :their_path, :our_path, :our_mode].map do |instance_variable|
+        instance_variables = [:merge_file_result, :their_path, :our_path, :our_mode, :type].map do |instance_variable|
           value = instance_variable_get("@#{instance_variable}")
 
           "#{instance_variable}=\"#{value}\""
diff --git a/lib/gitlab/conflict/file_collection.rb b/lib/gitlab/conflict/file_collection.rb
index bbd0427a2c8..fa5bd4649d4 100644
--- a/lib/gitlab/conflict/file_collection.rb
+++ b/lib/gitlab/conflict/file_collection.rb
@@ -30,6 +30,10 @@ module Gitlab
         end
       end
 
+      def file_for_path(old_path, new_path)
+        files.find { |file| file.their_path == old_path && file.our_path == new_path }
+      end
+
       def as_json(opts = nil)
         {
           target_branch: merge_request.target_branch,
diff --git a/lib/gitlab/conflict/parser.rb b/lib/gitlab/conflict/parser.rb
index 98e842cded3..ddd657903fb 100644
--- a/lib/gitlab/conflict/parser.rb
+++ b/lib/gitlab/conflict/parser.rb
@@ -1,19 +1,24 @@
 module Gitlab
   module Conflict
     class Parser
-      class ParserError < StandardError
+      class UnresolvableError < StandardError
       end
 
-      class UnexpectedDelimiter < ParserError
+      class UnmergeableFile < UnresolvableError
       end
 
-      class MissingEndDelimiter < ParserError
+      class UnsupportedEncoding < UnresolvableError
+      end
+
+      # Recoverable errors - the conflict can be resolved in an editor, but not with
+      # sections.
+      class ParserError < StandardError
       end
 
-      class UnmergeableFile < ParserError
+      class UnexpectedDelimiter < ParserError
       end
 
-      class UnsupportedEncoding < ParserError
+      class MissingEndDelimiter < ParserError
       end
 
       def parse(text, our_path:, their_path:, parent_file: nil)
diff --git a/lib/gitlab/conflict/resolution_error.rb b/lib/gitlab/conflict/resolution_error.rb
new file mode 100644
index 00000000000..a0f2006bc24
--- /dev/null
+++ b/lib/gitlab/conflict/resolution_error.rb
@@ -0,0 +1,6 @@
+module Gitlab
+  module Conflict
+    class ResolutionError < StandardError
+    end
+  end
+end
diff --git a/spec/controllers/projects/merge_requests_controller_spec.rb b/spec/controllers/projects/merge_requests_controller_spec.rb
index d509f0f2b96..d6980471ea4 100644
--- a/spec/controllers/projects/merge_requests_controller_spec.rb
+++ b/spec/controllers/projects/merge_requests_controller_spec.rb
@@ -570,7 +570,7 @@ describe Projects::MergeRequestsController do
     context 'when the conflicts cannot be resolved in the UI' do
       before do
         allow_any_instance_of(Gitlab::Conflict::Parser).
-          to receive(:parse).and_raise(Gitlab::Conflict::Parser::UnexpectedDelimiter)
+          to receive(:parse).and_raise(Gitlab::Conflict::Parser::UnmergeableFile)
 
         get :conflicts,
             namespace_id: merge_request_with_conflicts.project.namespace.to_param,
@@ -597,6 +597,10 @@ describe Projects::MergeRequestsController do
             format: 'json'
       end
 
+      it 'matches the schema' do
+        expect(response).to match_response_schema('conflicts')
+      end
+
       it 'includes meta info about the MR' do
         expect(json_response['commit_message']).to include('Merge branch')
         expect(json_response['commit_sha']).to match(/\h{40}/)
@@ -658,26 +662,97 @@ describe Projects::MergeRequestsController do
     end
   end
 
+  describe 'GET conflict_for_path' do
+    let(:json_response) { JSON.parse(response.body) }
+
+    def conflict_for_path(path)
+      get :conflict_for_path,
+          namespace_id: merge_request_with_conflicts.project.namespace.to_param,
+          project_id: merge_request_with_conflicts.project.to_param,
+          id: merge_request_with_conflicts.iid,
+          old_path: path,
+          new_path: path,
+          format: 'json'
+    end
+
+    context 'when the conflicts cannot be resolved in the UI' do
+      before do
+        allow_any_instance_of(Gitlab::Conflict::Parser).
+          to receive(:parse).and_raise(Gitlab::Conflict::Parser::UnmergeableFile)
+
+        conflict_for_path('files/ruby/regex.rb')
+      end
+
+      it 'returns a 404 status code' do
+        expect(response).to have_http_status(:not_found)
+      end
+    end
+
+    context 'when the file does not exist cannot be resolved in the UI' do
+      before { conflict_for_path('files/ruby/regexp.rb') }
+
+      it 'returns a 404 status code' do
+        expect(response).to have_http_status(:not_found)
+      end
+    end
+
+    context 'with an existing file' do
+      let(:path) { 'files/ruby/regex.rb' }
+
+      before { conflict_for_path(path) }
+
+      it 'returns a 200 status code' do
+        expect(response).to have_http_status(:ok)
+      end
+
+      it 'returns the file in JSON format' do
+        content = merge_request_with_conflicts.conflicts.file_for_path(path, path).content
+
+        expect(json_response).to include('old_path' => path,
+                                         'new_path' => path,
+                                         'blob_icon' => 'file-text-o',
+                                         'blob_path' => a_string_ending_with(path),
+                                         'blob_ace_mode' => 'ruby',
+                                         'content' => content)
+      end
+    end
+  end
+
   context 'POST resolve_conflicts' do
     let(:json_response) { JSON.parse(response.body) }
     let!(:original_head_sha) { merge_request_with_conflicts.diff_head_sha }
 
-    def resolve_conflicts(sections)
+    def resolve_conflicts(files)
       post :resolve_conflicts,
            namespace_id: merge_request_with_conflicts.project.namespace.to_param,
            project_id: merge_request_with_conflicts.project.to_param,
            id: merge_request_with_conflicts.iid,
            format: 'json',
-           sections: sections,
+           files: files,
            commit_message: 'Commit message'
     end
 
     context 'with valid params' do
       before do
-        resolve_conflicts('2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_14' => 'head',
-                          '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head',
-                          '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_21_21' => 'origin',
-                          '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_49_49' => 'origin')
+        resolved_files = [
+          {
+            'new_path' => 'files/ruby/popen.rb',
+            'old_path' => 'files/ruby/popen.rb',
+            'sections' => {
+              '2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_14' => 'head'
+            }
+          }, {
+            'new_path' => 'files/ruby/regex.rb',
+            'old_path' => 'files/ruby/regex.rb',
+            'sections' => {
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head',
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_21_21' => 'origin',
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_49_49' => 'origin'
+            }
+          }
+        ]
+
+        resolve_conflicts(resolved_files)
       end
 
       it 'creates a new commit on the branch' do
@@ -692,7 +767,23 @@ describe Projects::MergeRequestsController do
 
     context 'when sections are missing' do
       before do
-        resolve_conflicts('2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_14' => 'head')
+        resolved_files = [
+          {
+            'new_path' => 'files/ruby/popen.rb',
+            'old_path' => 'files/ruby/popen.rb',
+            'sections' => {
+              '2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_14' => 'head'
+            }
+          }, {
+            'new_path' => 'files/ruby/regex.rb',
+            'old_path' => 'files/ruby/regex.rb',
+            'sections' => {
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head'
+            }
+          }
+        ]
+
+        resolve_conflicts(resolved_files)
       end
 
       it 'returns a 400 error' do
@@ -700,7 +791,71 @@ describe Projects::MergeRequestsController do
       end
 
       it 'has a message with the name of the first missing section' do
-        expect(json_response['message']).to include('6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9')
+        expect(json_response['message']).to include('6eb14e00385d2fb284765eb1cd8d420d33d63fc9_21_21')
+      end
+
+      it 'does not create a new commit' do
+        expect(original_head_sha).to eq(merge_request_with_conflicts.source_branch_head.sha)
+      end
+    end
+
+    context 'when files are missing' do
+      before do
+        resolved_files = [
+          {
+            'new_path' => 'files/ruby/regex.rb',
+            'old_path' => 'files/ruby/regex.rb',
+            'sections' => {
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head',
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_21_21' => 'origin',
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_49_49' => 'origin'
+            }
+          }
+        ]
+
+        resolve_conflicts(resolved_files)
+      end
+
+      it 'returns a 400 error' do
+        expect(response).to have_http_status(:bad_request)
+      end
+
+      it 'has a message with the name of the missing file' do
+        expect(json_response['message']).to include('files/ruby/popen.rb')
+      end
+
+      it 'does not create a new commit' do
+        expect(original_head_sha).to eq(merge_request_with_conflicts.source_branch_head.sha)
+      end
+    end
+
+    context 'when a file has identical content to the conflict' do
+      before do
+        resolved_files = [
+          {
+            'new_path' => 'files/ruby/popen.rb',
+            'old_path' => 'files/ruby/popen.rb',
+            'content' => merge_request_with_conflicts.conflicts.file_for_path('files/ruby/popen.rb', 'files/ruby/popen.rb').content
+          }, {
+            'new_path' => 'files/ruby/regex.rb',
+            'old_path' => 'files/ruby/regex.rb',
+            'sections' => {
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head',
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_21_21' => 'origin',
+              '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_49_49' => 'origin'
+            }
+          }
+        ]
+
+        resolve_conflicts(resolved_files)
+      end
+
+      it 'returns a 400 error' do
+        expect(response).to have_http_status(:bad_request)
+      end
+
+      it 'has a message with the path of the problem file' do
+        expect(json_response['message']).to include('files/ruby/popen.rb')
       end
 
       it 'does not create a new commit' do
diff --git a/spec/features/atom/users_spec.rb b/spec/features/atom/users_spec.rb
index a8833194421..f8c3ccb416b 100644
--- a/spec/features/atom/users_spec.rb
+++ b/spec/features/atom/users_spec.rb
@@ -53,7 +53,7 @@ describe "User Feed", feature: true  do
       end
 
       it 'has XHTML summaries in issue descriptions' do
-        expect(body).to match /we have a bug!<\/p>\n\n<hr ?\/>\n\n<p>I guess/
+        expect(body).to match /we have a bug!<\/p>\n\n<hr ?\/>\n\n<p dir="auto">I guess/
       end
 
       it 'has XHTML summaries in notes' do
diff --git a/spec/features/merge_requests/conflicts_spec.rb b/spec/features/merge_requests/conflicts_spec.rb
index 759edf8ec80..d258ff52bbb 100644
--- a/spec/features/merge_requests/conflicts_spec.rb
+++ b/spec/features/merge_requests/conflicts_spec.rb
@@ -12,29 +12,139 @@ feature 'Merge request conflict resolution', js: true, feature: true do
     end
   end
 
-  context 'when a merge request can be resolved in the UI' do
-    let(:merge_request) { create_merge_request('conflict-resolvable') }
+  shared_examples "conflicts are resolved in Interactive mode" do
+    it 'conflicts are resolved in Interactive mode' do
+      within find('.files-wrapper .diff-file', text: 'files/ruby/popen.rb') do
+        click_button 'Use ours'
+      end
+
+      within find('.files-wrapper .diff-file', text: 'files/ruby/regex.rb') do
+        all('button', text: 'Use ours').each do |button|
+          button.click
+        end
+      end
+
+      click_button 'Commit conflict resolution'
+      wait_for_ajax
+
+      expect(page).to have_content('All merge conflicts were resolved')
+      merge_request.reload_diff
+
+      click_on 'Changes'
+      wait_for_ajax
+
+      within find('.diff-file', text: 'files/ruby/popen.rb') do
+        expect(page).to have_selector('.line_content.new', text: "vars = { 'PWD' => path }")
+        expect(page).to have_selector('.line_content.new', text: "options = { chdir: path }")
+      end
+
+      within find('.diff-file', text: 'files/ruby/regex.rb') do
+        expect(page).to have_selector('.line_content.new', text: "def username_regexp")
+        expect(page).to have_selector('.line_content.new', text: "def project_name_regexp")
+        expect(page).to have_selector('.line_content.new', text: "def path_regexp")
+        expect(page).to have_selector('.line_content.new', text: "def archive_formats_regexp")
+        expect(page).to have_selector('.line_content.new', text: "def git_reference_regexp")
+        expect(page).to have_selector('.line_content.new', text: "def default_regexp")
+      end
+    end
+  end
 
+  shared_examples "conflicts are resolved in Edit inline mode" do
+    it 'conflicts are resolved in Edit inline mode' do
+      expect(find('#conflicts')).to have_content('popen.rb')
+
+      within find('.files-wrapper .diff-file', text: 'files/ruby/popen.rb') do
+        click_button 'Edit inline'
+        wait_for_ajax
+        execute_script('ace.edit($(".files-wrapper .diff-file pre")[0]).setValue("One morning");')
+      end
+
+      within find('.files-wrapper .diff-file', text: 'files/ruby/regex.rb') do
+        click_button 'Edit inline'
+        wait_for_ajax
+        execute_script('ace.edit($(".files-wrapper .diff-file pre")[1]).setValue("Gregor Samsa woke from troubled dreams");')
+      end
+
+      click_button 'Commit conflict resolution'
+      wait_for_ajax
+      expect(page).to have_content('All merge conflicts were resolved')
+      merge_request.reload_diff
+
+      click_on 'Changes'
+      wait_for_ajax
+
+      expect(page).to have_content('One morning')
+      expect(page).to have_content('Gregor Samsa woke from troubled dreams')
+    end
+  end
+
+  context 'can be resolved in the UI' do
     before do
       project.team << [user, :developer]
       login_as(user)
-
-      visit namespace_project_merge_request_path(project.namespace, project, merge_request)
     end
 
-    it 'shows a link to the conflict resolution page' do
-      expect(page).to have_link('conflicts', href: /\/conflicts\Z/)
+    context 'the conflicts are resolvable' do
+      let(:merge_request) { create_merge_request('conflict-resolvable') }
+
+      before { visit namespace_project_merge_request_path(project.namespace, project, merge_request) }
+
+      it 'shows a link to the conflict resolution page' do
+        expect(page).to have_link('conflicts', href: /\/conflicts\Z/)
+      end
+
+      context 'in Inline view mode' do
+        before { click_link('conflicts', href: /\/conflicts\Z/) }
+
+        include_examples "conflicts are resolved in Interactive mode"
+        include_examples "conflicts are resolved in Edit inline mode"
+      end
+
+      context 'in Parallel view mode' do
+        before do
+          click_link('conflicts', href: /\/conflicts\Z/) 
+          click_button 'Side-by-side'
+        end
+
+        include_examples "conflicts are resolved in Interactive mode"
+        include_examples "conflicts are resolved in Edit inline mode"
+      end
     end
 
-    context 'visiting the conflicts resolution page' do
-      before { click_link('conflicts', href: /\/conflicts\Z/) }
+    context 'the conflict contain markers' do
+      let(:merge_request) { create_merge_request('conflict-contains-conflict-markers') }
 
-      it 'shows the conflicts' do
-        begin
-          expect(find('#conflicts')).to have_content('popen.rb')
-        rescue Capybara::Poltergeist::JavascriptError
-          retry
+      before do
+        visit namespace_project_merge_request_path(project.namespace, project, merge_request)
+        click_link('conflicts', href: /\/conflicts\Z/)
+      end
+
+      it 'conflicts can not be resolved in Interactive mode' do
+        within find('.files-wrapper .diff-file', text: 'files/markdown/ruby-style-guide.md') do
+          expect(page).not_to have_content 'Interactive mode'
+          expect(page).not_to have_content 'Edit inline'
+        end
+      end
+
+      it 'conflicts are resolved in Edit inline mode' do
+        within find('.files-wrapper .diff-file', text: 'files/markdown/ruby-style-guide.md') do
+          wait_for_ajax
+          execute_script('ace.edit($(".files-wrapper .diff-file pre")[0]).setValue("Gregor Samsa woke from troubled dreams");')
         end
+
+        click_button 'Commit conflict resolution'
+        wait_for_ajax
+
+        expect(page).to have_content('All merge conflicts were resolved')
+
+        merge_request.reload_diff
+
+        click_on 'Changes'
+        wait_for_ajax
+        find('.click-to-expand').click
+        wait_for_ajax
+
+        expect(page).to have_content('Gregor Samsa woke from troubled dreams')
       end
     end
   end
@@ -42,7 +152,6 @@ feature 'Merge request conflict resolution', js: true, feature: true do
   UNRESOLVABLE_CONFLICTS = {
     'conflict-too-large' => 'when the conflicts contain a large file',
     'conflict-binary-file' => 'when the conflicts contain a binary file',
-    'conflict-contains-conflict-markers' => 'when the conflicts contain a file with ambiguous conflict markers',
     'conflict-missing-side' => 'when the conflicts contain a file edited in one branch and deleted in another',
     'conflict-non-utf8' => 'when the conflicts contain a non-UTF-8 file',
   }
diff --git a/spec/features/projects/files/find_file_keyboard_spec.rb b/spec/features/projects/files/find_file_keyboard_spec.rb
new file mode 100644
index 00000000000..fc88fd74af8
--- /dev/null
+++ b/spec/features/projects/files/find_file_keyboard_spec.rb
@@ -0,0 +1,42 @@
+require 'spec_helper'
+
+feature 'Find file keyboard shortcuts', feature: true, js: true do
+  include WaitForAjax
+
+  let(:user) { create(:user) }
+  let(:project) { create(:project) }
+
+  before do
+    project.team << [user, :master]
+    login_as user
+
+    visit namespace_project_find_file_path(project.namespace, project, project.repository.root_ref)
+
+    wait_for_ajax
+  end
+
+  it 'opens file when pressing enter key' do
+    fill_in 'file_find', with: 'CHANGELOG'
+
+    find('#file_find').native.send_keys(:enter)
+
+    expect(page).to have_selector('.blob-content-holder')
+
+    page.within('.file-title') do
+      expect(page).to have_content('CHANGELOG')
+    end
+  end
+
+  it 'navigates files with arrow keys' do
+    fill_in 'file_find', with: 'application.'
+
+    find('#file_find').native.send_keys(:down)
+    find('#file_find').native.send_keys(:enter)
+
+    expect(page).to have_selector('.blob-content-holder')
+
+    page.within('.file-title') do
+      expect(page).to have_content('application.js')
+    end
+  end
+end
diff --git a/spec/features/users_spec.rb b/spec/features/users_spec.rb
index ec4c4d62f53..111ca7f7a70 100644
--- a/spec/features/users_spec.rb
+++ b/spec/features/users_spec.rb
@@ -51,6 +51,18 @@ feature 'Users', feature: true, js: true do
       expect(current_path).to eq user_path(user)
       expect(page).to have_text(user.name)
     end
+
+    scenario '/u/user1/groups redirects to user groups page' do
+      visit '/u/user1/groups'
+
+      expect(current_path).to eq user_groups_path(user)
+    end
+
+    scenario '/u/user1/projects redirects to user projects page' do
+      visit '/u/user1/projects'
+
+      expect(current_path).to eq user_projects_path(user)
+    end
   end
 
   feature 'username validation' do
diff --git a/spec/fixtures/api/schemas/conflicts.json b/spec/fixtures/api/schemas/conflicts.json
new file mode 100644
index 00000000000..a947783d505
--- /dev/null
+++ b/spec/fixtures/api/schemas/conflicts.json
@@ -0,0 +1,137 @@
+{
+  "type": "object",
+  "required": [
+    "commit_message",
+    "commit_sha",
+    "source_branch",
+    "target_branch",
+    "files"
+  ],
+  "properties": {
+    "commit_message": {"type": "string"},
+    "commit_sha": {"type": "string", "pattern": "^[0-9a-f]{40}$"},
+    "source_branch": {"type": "string"},
+    "target_branch": {"type": "string"},
+    "files": {
+      "type": "array",
+      "items": {
+        "oneOf": [
+          { "$ref": "#/definitions/conflict-text-with-sections" },
+          { "$ref": "#/definitions/conflict-text-for-editor" }
+        ]
+      }
+    }
+  },
+  "definitions": {
+    "conflict-base": {
+      "type": "object",
+      "required": [
+        "old_path",
+        "new_path",
+        "blob_icon",
+        "blob_path"
+      ],
+      "properties": {
+        "old_path": {"type": "string"},
+        "new_path": {"type": "string"},
+        "blob_icon": {"type": "string"},
+        "blob_path": {"type": "string"}
+      }
+    },
+    "conflict-text-for-editor": {
+      "allOf": [
+        {"$ref": "#/definitions/conflict-base"},
+        {
+          "type": "object",
+          "required": [
+            "type",
+            "content_path"
+          ],
+          "properties": {
+            "type": {"type": {"enum": ["text-editor"]}},
+            "content_path": {"type": "string"}
+          }
+        }
+      ]
+    },
+    "conflict-text-with-sections": {
+      "allOf": [
+        {"$ref": "#/definitions/conflict-base"},
+        {
+          "type": "object",
+          "required": [
+            "type",
+            "content_path",
+            "sections"
+          ],
+          "properties": {
+            "type": {"type": {"enum": ["text"]}},
+            "content_path": {"type": "string"},
+            "sections": {
+              "type": "array",
+              "items": {
+                "oneOf": [
+                  { "$ref": "#/definitions/section-context" },
+                  { "$ref": "#/definitions/section-conflict" }
+                ]
+              }
+            }
+          }
+        }
+      ]
+    },
+    "section-base": {
+      "type": "object",
+      "required": [
+        "conflict",
+        "lines"
+      ],
+      "properties": {
+        "conflict": {"type": "boolean"},
+        "lines": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "required": [
+              "old_line",
+              "new_line",
+              "text",
+              "rich_text"
+            ],
+            "properties": {
+              "type": {"type": "string"},
+              "old_line": {"type": "string"},
+              "new_line": {"type": "string"},
+              "text": {"type": "string"},
+              "rich_text": {"type": "string"}
+            }
+          }
+        }
+      }
+    },
+    "section-context": {
+      "allOf": [
+        {"$ref": "#/definitions/section-base"},
+        {
+          "type": "object",
+          "properties": {
+            "conflict": {"enum": [false]}
+          }
+        }
+      ]
+    },
+    "section-conflict": {
+      "allOf": [
+        {"$ref": "#/definitions/section-base"},
+        {
+          "type": "object",
+          "required": ["id"],
+          "properties": {
+            "conflict": {"enum": [true]},
+            "id": {"type": "string"}
+          }
+        }
+      ]
+    }
+  }
+}
diff --git a/spec/lib/banzai/object_renderer_spec.rb b/spec/lib/banzai/object_renderer_spec.rb
index 90da78a67dd..6bcda87c999 100644
--- a/spec/lib/banzai/object_renderer_spec.rb
+++ b/spec/lib/banzai/object_renderer_spec.rb
@@ -24,7 +24,7 @@ describe Banzai::ObjectRenderer do
         with(an_instance_of(Array)).
         and_call_original
 
-      expect(object).to receive(:redacted_note_html=).with('<p>hello</p>')
+      expect(object).to receive(:redacted_note_html=).with('<p dir="auto">hello</p>')
       expect(object).to receive(:user_visible_reference_count=).with(0)
 
       renderer.render([object], :note)
@@ -92,10 +92,10 @@ describe Banzai::ObjectRenderer do
       docs = renderer.render_attributes(objects, :note)
 
       expect(docs[0]).to be_an_instance_of(Nokogiri::HTML::DocumentFragment)
-      expect(docs[0].to_html).to eq('<p>hello</p>')
+      expect(docs[0].to_html).to eq('<p dir="auto">hello</p>')
 
       expect(docs[1]).to be_an_instance_of(Nokogiri::HTML::DocumentFragment)
-      expect(docs[1].to_html).to eq('<p>bye</p>')
+      expect(docs[1].to_html).to eq('<p dir="auto">bye</p>')
     end
 
     it 'returns when no objects to render' do
diff --git a/spec/lib/banzai/pipeline/description_pipeline_spec.rb b/spec/lib/banzai/pipeline/description_pipeline_spec.rb
index 76f42071810..8cce1b96698 100644
--- a/spec/lib/banzai/pipeline/description_pipeline_spec.rb
+++ b/spec/lib/banzai/pipeline/description_pipeline_spec.rb
@@ -4,11 +4,11 @@ describe Banzai::Pipeline::DescriptionPipeline do
   def parse(html)
     # When we pass HTML to Redcarpet, it gets wrapped in `p` tags...
     # ...except when we pass it pre-wrapped text. Rabble rabble.
-    unwrap = !html.start_with?('<p>')
+    unwrap = !html.start_with?('<p ')
 
     output = described_class.to_html(html, project: spy)
 
-    output.gsub!(%r{\A<p>(.*)</p>(.*)\z}, '\1\2') if unwrap
+    output.gsub!(%r{\A<p dir="auto">(.*)</p>(.*)\z}, '\1\2') if unwrap
 
     output
   end
@@ -27,11 +27,17 @@ describe Banzai::Pipeline::DescriptionPipeline do
     end
   end
 
-  %w(b i strong em a ins del sup sub p).each do |elem|
+  %w(b i strong em a ins del sup sub).each do |elem|
     it "still allows '#{elem}' elements" do
       exp = act = "<#{elem}>Description</#{elem}>"
 
       expect(parse(act).strip).to eq exp
     end
   end
+
+  it "still allows 'p' elements" do
+    exp = act = "<p dir=\"auto\">Description</p>"
+
+    expect(parse(act).strip).to eq exp
+  end
 end
diff --git a/spec/lib/gitlab/conflict/file_spec.rb b/spec/lib/gitlab/conflict/file_spec.rb
index 60020487061..648d342ecf8 100644
--- a/spec/lib/gitlab/conflict/file_spec.rb
+++ b/spec/lib/gitlab/conflict/file_spec.rb
@@ -257,5 +257,16 @@ FILE
     it 'includes the blob icon for the file' do
       expect(conflict_file.as_json[:blob_icon]).to eq('file-text-o')
     end
+
+    context 'with the full_content option passed' do
+      it 'includes the full content of the conflict' do
+        expect(conflict_file.as_json(full_content: true)).to have_key(:content)
+      end
+
+      it 'includes the detected language of the conflict file' do
+        expect(conflict_file.as_json(full_content: true)[:blob_ace_mode]).
+          to eq('ruby')
+      end
+    end
   end
 end
diff --git a/spec/models/ci/pipeline_spec.rb b/spec/models/ci/pipeline_spec.rb
index 550a890797e..163c0b5c516 100644
--- a/spec/models/ci/pipeline_spec.rb
+++ b/spec/models/ci/pipeline_spec.rb
@@ -187,33 +187,24 @@ describe Ci::Pipeline, models: true do
       end
     end
 
-    describe "merge request metrics" do
+    describe 'merge request metrics' do
       let(:project) { FactoryGirl.create :project }
       let(:pipeline) { FactoryGirl.create(:ci_empty_pipeline, status: 'created', project: project, ref: 'master', sha: project.repository.commit('master').id) }
       let!(:merge_request) { create(:merge_request, source_project: project, source_branch: pipeline.ref) }
 
-      context 'when transitioning to running' do
-        it 'records the build start time' do
-          time = Time.now
-          Timecop.freeze(time) { build.run }
-
-          expect(merge_request.reload.metrics.latest_build_started_at).to be_within(1.second).of(time)
-        end
-
-        it 'clears the build end time' do
-          build.run
+      before do
+        expect(PipelineMetricsWorker).to receive(:perform_async).with(pipeline.id)
+      end
 
-          expect(merge_request.reload.metrics.latest_build_finished_at).to be_nil
+      context 'when transitioning to running' do
+        it 'schedules metrics workers' do
+          pipeline.run
         end
       end
 
       context 'when transitioning to success' do
-        it 'records the build end time' do
-          build.run
-          time = Time.now
-          Timecop.freeze(time) { build.success }
-
-          expect(merge_request.reload.metrics.latest_build_finished_at).to be_within(1.second).of(time)
+        it 'schedules metrics workers' do
+          pipeline.succeed
         end
       end
     end
diff --git a/spec/models/concerns/cache_markdown_field_spec.rb b/spec/models/concerns/cache_markdown_field_spec.rb
index 15cd3a7ed70..2e3702f7520 100644
--- a/spec/models/concerns/cache_markdown_field_spec.rb
+++ b/spec/models/concerns/cache_markdown_field_spec.rb
@@ -64,7 +64,7 @@ describe CacheMarkdownField do
   let(:html) { "<p><code>Foo</code></p>" }
 
   let(:updated_markdown) { "`Bar`" }
-  let(:updated_html) { "<p><code>Bar</code></p>" }
+  let(:updated_html) { "<p dir=\"auto\"><code>Bar</code></p>" }
 
   subject { ThingWithMarkdownFields.new(foo: markdown, foo_html: html) }
 
diff --git a/spec/models/merge_request_spec.rb b/spec/models/merge_request_spec.rb
index 2167a988f99..1acc8d748af 100644
--- a/spec/models/merge_request_spec.rb
+++ b/spec/models/merge_request_spec.rb
@@ -1155,12 +1155,6 @@ describe MergeRequest, models: true do
       expect(merge_request.conflicts_can_be_resolved_in_ui?).to be_falsey
     end
 
-    it 'returns a falsey value when the conflicts contain a file with ambiguous conflict markers' do
-      merge_request = create_merge_request('conflict-contains-conflict-markers')
-
-      expect(merge_request.conflicts_can_be_resolved_in_ui?).to be_falsey
-    end
-
     it 'returns a falsey value when the conflicts contain a file edited in one branch and deleted in another' do
       merge_request = create_merge_request('conflict-missing-side')
 
@@ -1172,6 +1166,12 @@ describe MergeRequest, models: true do
 
       expect(merge_request.conflicts_can_be_resolved_in_ui?).to be_truthy
     end
+
+    it 'returns a truthy value when the conflicts have to be resolved in an editor' do
+      merge_request = create_merge_request('conflict-contains-conflict-markers')
+
+      expect(merge_request.conflicts_can_be_resolved_in_ui?).to be_truthy
+    end
   end
 
   describe "#forked_source_project_missing?" do
diff --git a/spec/routing/routing_spec.rb b/spec/routing/routing_spec.rb
index 488dc1a63b0..c18a2d55e43 100644
--- a/spec/routing/routing_spec.rb
+++ b/spec/routing/routing_spec.rb
@@ -15,27 +15,27 @@ describe UsersController, "routing" do
   end
 
   it "to #groups" do
-    expect(get("/u/User/groups")).to route_to('users#groups', username: 'User')
+    expect(get("/users/User/groups")).to route_to('users#groups', username: 'User')
   end
 
   it "to #projects" do
-    expect(get("/u/User/projects")).to route_to('users#projects', username: 'User')
+    expect(get("/users/User/projects")).to route_to('users#projects', username: 'User')
   end
 
   it "to #contributed" do
-    expect(get("/u/User/contributed")).to route_to('users#contributed', username: 'User')
+    expect(get("/users/User/contributed")).to route_to('users#contributed', username: 'User')
   end
 
   it "to #snippets" do
-    expect(get("/u/User/snippets")).to route_to('users#snippets', username: 'User')
+    expect(get("/users/User/snippets")).to route_to('users#snippets', username: 'User')
   end
 
   it "to #calendar" do
-    expect(get("/u/User/calendar")).to route_to('users#calendar', username: 'User')
+    expect(get("/users/User/calendar")).to route_to('users#calendar', username: 'User')
   end
 
   it "to #calendar_activities" do
-    expect(get("/u/User/calendar_activities")).to route_to('users#calendar_activities', username: 'User')
+    expect(get("/users/User/calendar_activities")).to route_to('users#calendar_activities', username: 'User')
   end
 end
 
diff --git a/spec/services/merge_requests/resolve_service_spec.rb b/spec/services/merge_requests/resolve_service_spec.rb
index d71932458fa..388abb6a0df 100644
--- a/spec/services/merge_requests/resolve_service_spec.rb
+++ b/spec/services/merge_requests/resolve_service_spec.rb
@@ -24,15 +24,26 @@ describe MergeRequests::ResolveService do
   end
 
   describe '#execute' do
-    context 'with valid params' do
+    context 'with section params' do
       let(:params) do
         {
-          sections: {
-            '2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_14' => 'head',
-            '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head',
-            '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_21_21' => 'origin',
-            '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_49_49' => 'origin'
-          },
+          files: [
+            {
+              old_path: 'files/ruby/popen.rb',
+              new_path: 'files/ruby/popen.rb',
+              sections: {
+                '2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_14' => 'head'
+              }
+            }, {
+              old_path: 'files/ruby/regex.rb',
+              new_path: 'files/ruby/regex.rb',
+              sections: {
+                '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head',
+                '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_21_21' => 'origin',
+                '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_49_49' => 'origin'
+              }
+            }
+          ],
           commit_message: 'This is a commit message!'
         }
       end
@@ -49,7 +60,7 @@ describe MergeRequests::ResolveService do
         it 'creates a commit with the correct parents' do
           expect(merge_request.source_branch_head.parents.map(&:id)).
             to eq(['1450cd639e0bc6721eb02800169e464f212cde06',
-                   '75284c70dd26c87f2a3fb65fd5a1f0b0138d3a6b'])
+                   '824be604a34828eb682305f0d963056cfac87b2d'])
         end
       end
 
@@ -74,8 +85,96 @@ describe MergeRequests::ResolveService do
       end
     end
 
-    context 'when a resolution is missing' do
-      let(:invalid_params) { { sections: { '2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_14' => 'head' } } }
+    context 'with content and sections params' do
+      let(:popen_content) { "class Popen\nend" }
+
+      let(:params) do
+        {
+          files: [
+            {
+              old_path: 'files/ruby/popen.rb',
+              new_path: 'files/ruby/popen.rb',
+              content: popen_content
+            }, {
+              old_path: 'files/ruby/regex.rb',
+              new_path: 'files/ruby/regex.rb',
+              sections: {
+                '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head',
+                '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_21_21' => 'origin',
+                '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_49_49' => 'origin'
+              }
+            }
+          ],
+          commit_message: 'This is a commit message!'
+        }
+      end
+
+      before do
+        MergeRequests::ResolveService.new(project, user, params).execute(merge_request)
+      end
+
+      it 'creates a commit with the message' do
+        expect(merge_request.source_branch_head.message).to eq(params[:commit_message])
+      end
+
+      it 'creates a commit with the correct parents' do
+        expect(merge_request.source_branch_head.parents.map(&:id)).
+          to eq(['1450cd639e0bc6721eb02800169e464f212cde06',
+                 '824be604a34828eb682305f0d963056cfac87b2d'])
+      end
+
+      it 'sets the content to the content given' do
+        blob = merge_request.source_project.repository.blob_at(merge_request.source_branch_head.sha,
+                                                               'files/ruby/popen.rb')
+
+        expect(blob.data).to eq(popen_content)
+      end
+    end
+
+    context 'when a resolution section is missing' do
+      let(:invalid_params) do
+        {
+          files: [
+            {
+              old_path: 'files/ruby/popen.rb',
+              new_path: 'files/ruby/popen.rb',
+              content: ''
+            }, {
+              old_path: 'files/ruby/regex.rb',
+              new_path: 'files/ruby/regex.rb',
+              sections: { '6eb14e00385d2fb284765eb1cd8d420d33d63fc9_9_9' => 'head' }
+            }
+          ],
+          commit_message: 'This is a commit message!'
+        }
+      end
+
+      let(:service) { MergeRequests::ResolveService.new(project, user, invalid_params) }
+
+      it 'raises a MissingResolution error' do
+        expect { service.execute(merge_request) }.
+          to raise_error(Gitlab::Conflict::File::MissingResolution)
+      end
+    end
+
+    context 'when the content of a file is unchanged' do
+      let(:invalid_params) do
+        {
+          files: [
+            {
+              old_path: 'files/ruby/popen.rb',
+              new_path: 'files/ruby/popen.rb',
+              content: ''
+            }, {
+              old_path: 'files/ruby/regex.rb',
+              new_path: 'files/ruby/regex.rb',
+              content: merge_request.conflicts.file_for_path('files/ruby/regex.rb', 'files/ruby/regex.rb').content
+            }
+          ],
+          commit_message: 'This is a commit message!'
+        }
+      end
+
       let(:service) { MergeRequests::ResolveService.new(project, user, invalid_params) }
 
       it 'raises a MissingResolution error' do
@@ -83,5 +182,27 @@ describe MergeRequests::ResolveService do
           to raise_error(Gitlab::Conflict::File::MissingResolution)
       end
     end
+
+    context 'when a file is missing' do
+      let(:invalid_params) do
+        {
+          files: [
+            {
+              old_path: 'files/ruby/popen.rb',
+              new_path: 'files/ruby/popen.rb',
+              content: ''
+            }
+          ],
+          commit_message: 'This is a commit message!'
+        }
+      end
+
+      let(:service) { MergeRequests::ResolveService.new(project, user, invalid_params) }
+
+      it 'raises a MissingFiles error' do
+        expect { service.execute(merge_request) }.
+          to raise_error(MergeRequests::ResolveService::MissingFiles)
+      end
+    end
   end
 end
diff --git a/spec/support/test_env.rb b/spec/support/test_env.rb
index ad8ae763f6d..c79975d8667 100644
--- a/spec/support/test_env.rb
+++ b/spec/support/test_env.rb
@@ -27,10 +27,10 @@ module TestEnv
     'expand-collapse-lines'              => '238e82d',
     'video'                              => '8879059',
     'crlf-diff'                          => '5938907',
-    'conflict-start'                     => '75284c7',
+    'conflict-start'                     => '824be60',
     'conflict-resolvable'                => '1450cd6',
     'conflict-binary-file'               => '259a6fb',
-    'conflict-contains-conflict-markers' => '5e0964c',
+    'conflict-contains-conflict-markers' => '78a3086',
     'conflict-missing-side'              => 'eb227b3',
     'conflict-non-utf8'                  => 'd0a293c',
     'conflict-too-large'                 => '39fa04f',
@@ -98,7 +98,9 @@ module TestEnv
 
   def setup_gitlab_shell
     unless File.directory?(Gitlab.config.gitlab_shell.path)
-      `rake gitlab:shell:install`
+      unless system('rake', 'gitlab:shell:install')
+        raise 'Can`t clone gitlab-shell'
+      end
     end
   end
 
diff --git a/spec/workers/pipeline_metrics_worker_spec.rb b/spec/workers/pipeline_metrics_worker_spec.rb
new file mode 100644
index 00000000000..232478c9735
--- /dev/null
+++ b/spec/workers/pipeline_metrics_worker_spec.rb
@@ -0,0 +1,46 @@
+require 'spec_helper'
+
+describe PipelineMetricsWorker do
+  let(:project) { create(:project) }
+  let!(:merge_request) { create(:merge_request, source_project: project, source_branch: pipeline.ref) }
+
+  let(:pipeline) do
+    create(:ci_empty_pipeline,
+           status: status,
+           project: project,
+           ref: 'master',
+           sha: project.repository.commit('master').id,
+           started_at: 1.hour.ago,
+           finished_at: Time.now)
+  end
+
+  describe '#perform' do
+    subject { described_class.new.perform(pipeline.id) }
+
+    context 'when pipeline is running' do
+      let(:status) { 'running' }
+
+      it 'records the build start time' do
+        subject
+
+        expect(merge_request.reload.metrics.latest_build_started_at).to be_within(1.second).of(pipeline.started_at)
+      end
+
+      it 'clears the build end time' do
+        subject
+
+        expect(merge_request.reload.metrics.latest_build_finished_at).to be_nil
+      end
+    end
+
+    context 'when pipeline succeeded' do
+      let(:status) { 'success' }
+
+      it 'records the build end time' do
+        subject
+
+        expect(merge_request.reload.metrics.latest_build_finished_at).to be_within(1.second).of(pipeline.finished_at)
+      end
+    end
+  end
+end