Merge branch 'master' into 'bootstrap4'

# Conflicts:
#   app/views/admin/application_settings/_signin.html.haml

54 files changed, 955 insertions, 534 deletions

diff --git a/app/assets/images/ext_snippet_icons/ext_snippet_icons.png b/app/assets/images/ext_snippet_icons/ext_snippet_icons.png
new file mode 100644
index 00000000000..20380adc4e5
--- /dev/null
+++ b/app/assets/images/ext_snippet_icons/ext_snippet_icons.png
diff --git a/app/assets/images/ext_snippet_icons/logo.png b/app/assets/images/ext_snippet_icons/logo.png
new file mode 100644
index 00000000000..794c9cc2dbc
--- /dev/null
+++ b/app/assets/images/ext_snippet_icons/logo.png
diff --git a/app/assets/javascripts/feature_highlight/feature_highlight.js b/app/assets/javascripts/feature_highlight/feature_highlight.js
index c50ac667c20..2d5bae9a9c4 100644
--- a/app/assets/javascripts/feature_highlight/feature_highlight.js
+++ b/app/assets/javascripts/feature_highlight/feature_highlight.js
@@ -1,19 +1,19 @@
 import $ from 'jquery';
-import _ from 'underscore';
 import {
   getSelector,
-  togglePopover,
   inserted,
-  mouseenter,
-  mouseleave,
 } from './feature_highlight_helper';
+import {
+  togglePopover,
+  mouseenter,
+  debouncedMouseleave,
+} from '../shared/popover';
 
 export function setupFeatureHighlightPopover(id, debounceTimeout = 300) {
   const $selector = $(getSelector(id));
   const $parent = $selector.parent();
   const $popoverContent = $parent.siblings('.feature-highlight-popover-content');
   const hideOnScroll = togglePopover.bind($selector, false);
-  const debouncedMouseleave = _.debounce(mouseleave, debounceTimeout);
 
   $selector
     // Setup popover
@@ -29,13 +29,10 @@ export function setupFeatureHighlightPopover(id, debounceTimeout = 300) {
       `,
     })
     .on('mouseenter', mouseenter)
-    .on('mouseleave', debouncedMouseleave)
+    .on('mouseleave', debouncedMouseleave(debounceTimeout))
     .on('inserted.bs.popover', inserted)
     .on('show.bs.popover', () => {
-      window.addEventListener('scroll', hideOnScroll);
-    })
-    .on('hide.bs.popover', () => {
-      window.removeEventListener('scroll', hideOnScroll);
+      window.addEventListener('scroll', hideOnScroll, { once: true });
     })
     // Display feature highlight
     .removeAttr('disabled');
diff --git a/app/assets/javascripts/feature_highlight/feature_highlight_helper.js b/app/assets/javascripts/feature_highlight/feature_highlight_helper.js
index f480e72961c..d5b97ebb264 100644
--- a/app/assets/javascripts/feature_highlight/feature_highlight_helper.js
+++ b/app/assets/javascripts/feature_highlight/feature_highlight_helper.js
@@ -3,20 +3,10 @@ import axios from '../lib/utils/axios_utils';
 import { __ } from '../locale';
 import Flash from '../flash';
 import LazyLoader from '../lazy_loader';
+import { togglePopover } from '../shared/popover';
 
 export const getSelector = highlightId => `.js-feature-highlight[data-highlight=${highlightId}]`;
 
-export function togglePopover(show) {
-  const isAlreadyShown = this.hasClass('js-popover-show');
-  if ((show && isAlreadyShown) || (!show && !isAlreadyShown)) {
-    return false;
-  }
-  this.popover(show ? 'show' : 'hide');
-  this.toggleClass('disable-animation js-popover-show', show);
-
-  return true;
-}
-
 export function dismiss(highlightId) {
   axios.post(this.attr('data-dismiss-endpoint'), {
     feature_name: highlightId,
@@ -27,23 +17,6 @@ export function dismiss(highlightId) {
   this.hide();
 }
 
-export function mouseleave() {
-  if (!$('.popover:hover').length > 0) {
-    const $featureHighlight = $(this);
-    togglePopover.call($featureHighlight, false);
-  }
-}
-
-export function mouseenter() {
-  const $featureHighlight = $(this);
-
-  const showedPopover = togglePopover.call($featureHighlight, true);
-  if (showedPopover) {
-    $('.popover')
-      .on('mouseleave', mouseleave.bind($featureHighlight));
-  }
-}
-
 export function inserted() {
   const popoverId = this.getAttribute('aria-describedby');
   const highlightId = this.dataset.highlight;
diff --git a/app/assets/javascripts/ide/stores/modules/commit/actions.js b/app/assets/javascripts/ide/stores/modules/commit/actions.js
index f536ce6344b..367c45f7e2d 100644
--- a/app/assets/javascripts/ide/stores/modules/commit/actions.js
+++ b/app/assets/javascripts/ide/stores/modules/commit/actions.js
@@ -37,9 +37,9 @@ export const setLastCommitMessage = ({ rootState, commit }, data) => {
   const commitMsg = sprintf(
     __('Your changes have been committed. Commit %{commitId} %{commitStats}'),
     {
-      commitId: `<a href="${currentProject.web_url}/commit/${
+      commitId: `<a href="${currentProject.web_url}/commit/${data.short_id}" class="commit-sha">${
         data.short_id
-      }" class="commit-sha">${data.short_id}</a>`,
+      }</a>`,
       commitStats,
     },
     false,
@@ -54,9 +54,7 @@ export const checkCommitStatus = ({ rootState }) =>
     .then(({ data }) => {
       const { id } = data.commit;
       const selectedBranch =
-        rootState.projects[rootState.currentProjectId].branches[
-          rootState.currentBranchId
-        ];
+        rootState.projects[rootState.currentProjectId].branches[rootState.currentBranchId];
 
       if (selectedBranch.workingReference !== id) {
         return true;
@@ -135,32 +133,15 @@ export const updateFilesAfterCommit = (
 
   if (state.commitAction === consts.COMMIT_TO_NEW_BRANCH) {
     router.push(
-      `/project/${rootState.currentProjectId}/blob/${branch}/${
-        rootGetters.activeFile.path
-      }`,
+      `/project/${rootState.currentProjectId}/blob/${branch}/${rootGetters.activeFile.path}`,
     );
   }
-
-  dispatch('updateCommitAction', consts.COMMIT_TO_CURRENT_BRANCH);
 };
 
-export const commitChanges = ({
-  commit,
-  state,
-  getters,
-  dispatch,
-  rootState,
-}) => {
+export const commitChanges = ({ commit, state, getters, dispatch, rootState }) => {
   const newBranch = state.commitAction !== consts.COMMIT_TO_CURRENT_BRANCH;
-  const payload = createCommitPayload(
-    getters.branchName,
-    newBranch,
-    state,
-    rootState,
-  );
-  const getCommitStatus = newBranch
-    ? Promise.resolve(false)
-    : dispatch('checkCommitStatus');
+  const payload = createCommitPayload(getters.branchName, newBranch, state, rootState);
+  const getCommitStatus = newBranch ? Promise.resolve(false) : dispatch('checkCommitStatus');
 
   commit(types.UPDATE_LOADING, true);
 
@@ -182,28 +163,29 @@ export const commitChanges = ({
 
       if (!data.short_id) {
         flash(data.message, 'alert', document, null, false, true);
-        return;
+        return null;
       }
 
       dispatch('setLastCommitMessage', data);
       dispatch('updateCommitMessage', '');
-
-      if (state.commitAction === consts.COMMIT_TO_NEW_BRANCH_MR) {
-        dispatch(
-          'redirectToUrl',
-          createNewMergeRequestUrl(
-            rootState.projects[rootState.currentProjectId].web_url,
-            getters.branchName,
-            rootState.currentBranchId,
-          ),
-          { root: true },
-        );
-      } else {
-        dispatch('updateFilesAfterCommit', {
-          data,
-          branch: getters.branchName,
-        });
-      }
+      return dispatch('updateFilesAfterCommit', {
+        data,
+        branch: getters.branchName,
+      })
+        .then(() => {
+          if (state.commitAction === consts.COMMIT_TO_NEW_BRANCH_MR) {
+            dispatch(
+              'redirectToUrl',
+              createNewMergeRequestUrl(
+                rootState.projects[rootState.currentProjectId].web_url,
+                getters.branchName,
+                rootState.currentBranchId,
+              ),
+              { root: true },
+            );
+          }
+        })
+        .then(() => dispatch('updateCommitAction', consts.COMMIT_TO_CURRENT_BRANCH));
     })
     .catch(err => {
       let errMsg = __('Error committing changes. Please try again.');
diff --git a/app/assets/javascripts/merge_request_tabs.js b/app/assets/javascripts/merge_request_tabs.js
index 00a212f3d5f..3548c07aea8 100644
--- a/app/assets/javascripts/merge_request_tabs.js
+++ b/app/assets/javascripts/merge_request_tabs.js
@@ -7,11 +7,7 @@ import flash from './flash';
 import BlobForkSuggestion from './blob/blob_fork_suggestion';
 import initChangesDropdown from './init_changes_dropdown';
 import bp from './breakpoints';
-import {
-  parseUrlPathname,
-  handleLocationHash,
-  isMetaClick,
-} from './lib/utils/common_utils';
+import { parseUrlPathname, handleLocationHash, isMetaClick } from './lib/utils/common_utils';
 import { getLocationHash } from './lib/utils/url_utility';
 import initDiscussionTab from './image_diff/init_discussion_tab';
 import Diff from './diff';
@@ -69,11 +65,10 @@ import Notes from './notes';
 let location = window.location;
 
 export default class MergeRequestTabs {
-
   constructor({ action, setUrl, stubLocation } = {}) {
     const mergeRequestTabs = document.querySelector('.js-tabs-affix');
     const navbar = document.querySelector('.navbar-gitlab');
-    const peek = document.getElementById('peek');
+    const peek = document.getElementById('js-peek');
     const paddingTop = 16;
 
     this.diffsLoaded = false;
@@ -109,8 +104,7 @@ export default class MergeRequestTabs {
       .on('shown.bs.tab', '.merge-request-tabs a[data-toggle="tab"]', this.tabShown)
       .on('click', '.js-show-tab', this.showTab);
 
-    $('.merge-request-tabs a[data-toggle="tab"]')
-      .on('click', this.clickTab);
+    $('.merge-request-tabs a[data-toggle="tab"]').on('click', this.clickTab);
   }
 
   // Used in tests
@@ -119,8 +113,7 @@ export default class MergeRequestTabs {
       .off('shown.bs.tab', '.merge-request-tabs a[data-toggle="tab"]', this.tabShown)
       .off('click', '.js-show-tab', this.showTab);
 
-    $('.merge-request-tabs a[data-toggle="tab"]')
-      .off('click', this.clickTab);
+    $('.merge-request-tabs a[data-toggle="tab"]').off('click', this.clickTab);
   }
 
   destroyPipelinesView() {
@@ -183,10 +176,7 @@ export default class MergeRequestTabs {
 
   scrollToElement(container) {
     if (location.hash) {
-      const offset = 0 - (
-        $('.navbar-gitlab').outerHeight() +
-        $('.js-tabs-affix').outerHeight()
-      );
+      const offset = 0 - ($('.navbar-gitlab').outerHeight() + $('.js-tabs-affix').outerHeight());
       const $el = $(`${container} ${location.hash}:not(.match)`);
       if ($el.length) {
         $.scrollTo($el[0], { offset });
@@ -240,9 +230,13 @@ export default class MergeRequestTabs {
     // Turbolinks' history.
     //
     // See https://github.com/rails/turbolinks/issues/363
-    window.history.replaceState({
-      url: newState,
-    }, document.title, newState);
+    window.history.replaceState(
+      {
+        url: newState,
+      },
+      document.title,
+      newState,
+    );
 
     return newState;
   }
@@ -258,7 +252,8 @@ export default class MergeRequestTabs {
 
     this.toggleLoading(true);
 
-    axios.get(`${source}.json`)
+    axios
+      .get(`${source}.json`)
       .then(({ data }) => {
         document.querySelector('div#commits').innerHTML = data.html;
         localTimeAgo($('.js-timeago', 'div#commits'));
@@ -303,7 +298,8 @@ export default class MergeRequestTabs {
 
     this.toggleLoading(true);
 
-    axios.get(`${urlPathname}.json${location.search}`)
+    axios
+      .get(`${urlPathname}.json${location.search}`)
       .then(({ data }) => {
         const $container = $('#diffs');
         $container.html(data.html);
@@ -332,8 +328,7 @@ export default class MergeRequestTabs {
             cancelButtons: $(el).find('.js-cancel-fork-suggestion-button'),
             suggestionSections: $(el).find('.js-file-fork-suggestion-section'),
             actionTextPieces: $(el).find('.js-file-fork-suggestion-section-action'),
-          })
-            .init();
+          }).init();
         });
 
         // Scroll any linked note into view
@@ -388,8 +383,7 @@ export default class MergeRequestTabs {
 
   resetViewContainer() {
     if (this.fixedLayoutPref !== null) {
-      $('.content-wrapper .container-fluid')
-        .toggleClass('container-limited', this.fixedLayoutPref);
+      $('.content-wrapper .container-fluid').toggleClass('container-limited', this.fixedLayoutPref);
     }
   }
 
@@ -438,12 +432,11 @@ export default class MergeRequestTabs {
 
     const $diffTabs = $('#diff-notes-app');
 
-    $tabs.off('affix.bs.affix affix-top.bs.affix')
+    $tabs
+      .off('affix.bs.affix affix-top.bs.affix')
       .affix({
         offset: {
-          top: () => (
-            $diffTabs.offset().top - $tabs.height() - $fixedNav.height()
-          ),
+          top: () => $diffTabs.offset().top - $tabs.height() - $fixedNav.height(),
         },
       })
       .on('affix.bs.affix', () => $diffTabs.css({ marginTop: $tabs.height() }))
diff --git a/app/assets/javascripts/milestone.js b/app/assets/javascripts/milestone.js
index e6e3a66aa20..325fa570f37 100644
--- a/app/assets/javascripts/milestone.js
+++ b/app/assets/javascripts/milestone.js
@@ -1,6 +1,7 @@
 import $ from 'jquery';
 import axios from './lib/utils/axios_utils';
 import flash from './flash';
+import { mouseenter, debouncedMouseleave, togglePopover } from './shared/popover';
 
 export default class Milestone {
   constructor() {
@@ -43,4 +44,25 @@ export default class Milestone {
         .catch(() => flash('Error loading milestone tab'));
     }
   }
+
+  static initDeprecationMessage() {
+    const deprecationMesssageContainer = document.querySelector('.js-milestone-deprecation-message');
+
+    if (!deprecationMesssageContainer) return;
+
+    const deprecationMessage = deprecationMesssageContainer.querySelector('.js-milestone-deprecation-message-template').innerHTML;
+    const $popover = $('.js-popover-link', deprecationMesssageContainer);
+    const hideOnScroll = togglePopover.bind($popover, false);
+
+    $popover.popover({
+      content: deprecationMessage,
+      html: true,
+      placement: 'bottom',
+    })
+    .on('mouseenter', mouseenter)
+    .on('mouseleave', debouncedMouseleave())
+    .on('show.bs.popover', () => {
+      window.addEventListener('scroll', hideOnScroll, { once: true });
+    });
+  }
 }
diff --git a/app/assets/javascripts/pages/dashboard/milestones/show/index.js b/app/assets/javascripts/pages/dashboard/milestones/show/index.js
index 397149aaa9e..8b529585898 100644
--- a/app/assets/javascripts/pages/dashboard/milestones/show/index.js
+++ b/app/assets/javascripts/pages/dashboard/milestones/show/index.js
@@ -6,4 +6,6 @@ document.addEventListener('DOMContentLoaded', () => {
   new Milestone(); // eslint-disable-line no-new
   new Sidebar(); // eslint-disable-line no-new
   new MountMilestoneSidebar(); // eslint-disable-line no-new
+
+  Milestone.initDeprecationMessage();
 });
diff --git a/app/assets/javascripts/pages/groups/milestones/show/index.js b/app/assets/javascripts/pages/groups/milestones/show/index.js
index 88f40b5278e..74cc4ba42c1 100644
--- a/app/assets/javascripts/pages/groups/milestones/show/index.js
+++ b/app/assets/javascripts/pages/groups/milestones/show/index.js
@@ -1,3 +1,8 @@
 import initMilestonesShow from '~/pages/milestones/shared/init_milestones_show';
+import Milestone from '~/milestone';
 
-document.addEventListener('DOMContentLoaded', initMilestonesShow);
+document.addEventListener('DOMContentLoaded', () => {
+  initMilestonesShow();
+
+  Milestone.initDeprecationMessage();
+});
diff --git a/app/assets/javascripts/pages/projects/snippets/show/index.js b/app/assets/javascripts/pages/projects/snippets/show/index.js
index a134599cb04..c35b9c30058 100644
--- a/app/assets/javascripts/pages/projects/snippets/show/index.js
+++ b/app/assets/javascripts/pages/projects/snippets/show/index.js
@@ -1,11 +1,13 @@
 import initNotes from '~/init_notes';
 import ZenMode from '~/zen_mode';
-import LineHighlighter from '../../../../line_highlighter';
-import BlobViewer from '../../../../blob/viewer';
+import LineHighlighter from '~/line_highlighter';
+import BlobViewer from '~/blob/viewer';
+import snippetEmbed from '~/snippet/snippet_embed';
 
 document.addEventListener('DOMContentLoaded', () => {
   new LineHighlighter(); // eslint-disable-line no-new
   new BlobViewer(); // eslint-disable-line no-new
   initNotes();
   new ZenMode(); // eslint-disable-line no-new
+  snippetEmbed();
 });
diff --git a/app/assets/javascripts/pages/snippets/show/index.js b/app/assets/javascripts/pages/snippets/show/index.js
index f548b9fad65..26936110402 100644
--- a/app/assets/javascripts/pages/snippets/show/index.js
+++ b/app/assets/javascripts/pages/snippets/show/index.js
@@ -1,11 +1,13 @@
-import LineHighlighter from '../../../line_highlighter';
-import BlobViewer from '../../../blob/viewer';
-import ZenMode from '../../../zen_mode';
-import initNotes from '../../../init_notes';
+import LineHighlighter from '~/line_highlighter';
+import BlobViewer from '~/blob/viewer';
+import ZenMode from '~/zen_mode';
+import initNotes from '~/init_notes';
+import snippetEmbed from '~/snippet/snippet_embed';
 
 document.addEventListener('DOMContentLoaded', () => {
   new LineHighlighter(); // eslint-disable-line no-new
   new BlobViewer(); // eslint-disable-line no-new
   initNotes();
   new ZenMode(); // eslint-disable-line no-new
+  snippetEmbed();
 });
diff --git a/app/assets/javascripts/pipelines/components/stage.vue b/app/assets/javascripts/pipelines/components/stage.vue
index b3fcaf0ccd1..32cf3dba3c3 100644
--- a/app/assets/javascripts/pipelines/components/stage.vue
+++ b/app/assets/javascripts/pipelines/components/stage.vue
@@ -1,5 +1,4 @@
 <script>
-  import $ from 'jquery';
 
   /**
    * Renders each stage of the pipeline mini graph.
@@ -13,8 +12,11 @@
    * 3. Merge request widget
    * 4. Commit widget
    */
-  import axios from '../../lib/utils/axios_utils';
+
+  import $ from 'jquery';
   import Flash from '../../flash';
+  import axios from '../../lib/utils/axios_utils';
+  import eventHub from '../event_hub';
   import Icon from '../../vue_shared/components/icon.vue';
   import LoadingIcon from '../../vue_shared/components/loading_icon.vue';
   import tooltip from '../../vue_shared/directives/tooltip';
@@ -82,6 +84,7 @@
     methods: {
       onClickStage() {
         if (!this.isDropdownOpen()) {
+          eventHub.$emit('clickedDropdown');
           this.isLoading = true;
           this.fetchJobs();
         }
diff --git a/app/assets/javascripts/pipelines/constants.js b/app/assets/javascripts/pipelines/constants.js
new file mode 100644
index 00000000000..b384c7500e7
--- /dev/null
+++ b/app/assets/javascripts/pipelines/constants.js
@@ -0,0 +1,2 @@
+// eslint-disable-next-line import/prefer-default-export
+export const CANCEL_REQUEST = 'CANCEL_REQUEST';
diff --git a/app/assets/javascripts/pipelines/mixins/pipelines.js b/app/assets/javascripts/pipelines/mixins/pipelines.js
index 522a4277bd7..6d87f75ae8e 100644
--- a/app/assets/javascripts/pipelines/mixins/pipelines.js
+++ b/app/assets/javascripts/pipelines/mixins/pipelines.js
@@ -7,6 +7,7 @@ import SvgBlankState from '../components/blank_state.vue';
 import LoadingIcon from '../../vue_shared/components/loading_icon.vue';
 import PipelinesTableComponent from '../components/pipelines_table.vue';
 import eventHub from '../event_hub';
+import { CANCEL_REQUEST } from '../constants';
 
 export default {
   components: {
@@ -52,34 +53,58 @@ export default {
     });
 
     eventHub.$on('postAction', this.postAction);
+    eventHub.$on('clickedDropdown', this.updateTable);
   },
   beforeDestroy() {
     eventHub.$off('postAction', this.postAction);
+    eventHub.$off('clickedDropdown', this.updateTable);
   },
   destroyed() {
     this.poll.stop();
   },
   methods: {
+    updateTable() {
+      // Cancel ongoing request
+      if (this.isMakingRequest) {
+        this.service.cancelationSource.cancel(CANCEL_REQUEST);
+      }
+      // Stop polling
+      this.poll.stop();
+      // Update the table
+      return this.getPipelines()
+        .then(() => this.poll.restart());
+    },
     fetchPipelines() {
       if (!this.isMakingRequest) {
         this.isLoading = true;
 
-        this.service.getPipelines(this.requestData)
-          .then(response => this.successCallback(response))
-          .catch(() => this.errorCallback());
+        this.getPipelines();
       }
     },
+    getPipelines() {
+      return this.service.getPipelines(this.requestData)
+        .then(response => this.successCallback(response))
+        .catch((error) => this.errorCallback(error));
+    },
     setCommonData(pipelines) {
       this.store.storePipelines(pipelines);
       this.isLoading = false;
       this.updateGraphDropdown = true;
       this.hasMadeRequest = true;
+
+      // In case the previous polling request returned an error, we need to reset it
+      if (this.hasError) {
+        this.hasError = false;
+      }
     },
-    errorCallback() {
-      this.hasError = true;
-      this.isLoading = false;
-      this.updateGraphDropdown = false;
+    errorCallback(error) {
       this.hasMadeRequest = true;
+      this.isLoading = false;
+
+      if (error && error.message && error.message !== CANCEL_REQUEST) {
+        this.hasError = true;
+        this.updateGraphDropdown = false;
+      }
     },
     setIsMakingRequest(isMakingRequest) {
       this.isMakingRequest = isMakingRequest;
diff --git a/app/assets/javascripts/pipelines/services/pipelines_service.js b/app/assets/javascripts/pipelines/services/pipelines_service.js
index 001286f5d52..59c8b9c58e5 100644
--- a/app/assets/javascripts/pipelines/services/pipelines_service.js
+++ b/app/assets/javascripts/pipelines/services/pipelines_service.js
@@ -19,8 +19,13 @@ export default class PipelinesService {
 
   getPipelines(data = {}) {
     const { scope, page } = data;
+    const CancelToken = axios.CancelToken;
+
+    this.cancelationSource = CancelToken.source();
+
     return axios.get(this.endpoint, {
       params: { scope, page },
+      cancelToken: this.cancelationSource.token,
     });
   }
 
diff --git a/app/assets/javascripts/shared/popover.js b/app/assets/javascripts/shared/popover.js
new file mode 100644
index 00000000000..3fc03553bdd
--- /dev/null
+++ b/app/assets/javascripts/shared/popover.js
@@ -0,0 +1,33 @@
+import $ from 'jquery';
+import _ from 'underscore';
+
+export function togglePopover(show) {
+  const isAlreadyShown = this.hasClass('js-popover-show');
+  if ((show && isAlreadyShown) || (!show && !isAlreadyShown)) {
+    return false;
+  }
+  this.popover(show ? 'show' : 'hide');
+  this.toggleClass('disable-animation js-popover-show', show);
+
+  return true;
+}
+
+export function mouseleave() {
+  if (!$('.popover:hover').length > 0) {
+    const $popover = $(this);
+    togglePopover.call($popover, false);
+  }
+}
+
+export function mouseenter() {
+  const $popover = $(this);
+
+  const showedPopover = togglePopover.call($popover, true);
+  if (showedPopover) {
+    $('.popover').on('mouseleave', mouseleave.bind($popover));
+  }
+}
+
+export function debouncedMouseleave(debounceTimeout = 300) {
+  return _.debounce(mouseleave, debounceTimeout);
+}
diff --git a/app/assets/javascripts/shortcuts_dashboard_navigation.js b/app/assets/javascripts/shortcuts_dashboard_navigation.js
index 25f39e4fdb6..9f69f110d06 100644
--- a/app/assets/javascripts/shortcuts_dashboard_navigation.js
+++ b/app/assets/javascripts/shortcuts_dashboard_navigation.js
@@ -1,12 +1,15 @@
+import { visitUrl } from './lib/utils/url_utility';
+
 /**
  * Helper function that finds the href of the fiven selector and updates the location.
  *
  * @param  {String} selector
  */
-export default (selector) => {
-  const link = document.querySelector(selector).getAttribute('href');
+export default function findAndFollowLink(selector) {
+  const element = document.querySelector(selector);
+  const link = element && element.getAttribute('href');
 
   if (link) {
-    window.location = link;
+    visitUrl(link);
   }
-};
+}
diff --git a/app/assets/javascripts/snippet/snippet_embed.js b/app/assets/javascripts/snippet/snippet_embed.js
new file mode 100644
index 00000000000..81ec483f2d9
--- /dev/null
+++ b/app/assets/javascripts/snippet/snippet_embed.js
@@ -0,0 +1,23 @@
+export default () => {
+  const { protocol, host, pathname } = location;
+  const shareBtn = document.querySelector('.js-share-btn');
+  const embedBtn = document.querySelector('.js-embed-btn');
+  const snippetUrlArea = document.querySelector('.js-snippet-url-area');
+  const embedAction = document.querySelector('.js-embed-action');
+  const url = `${protocol}//${host + pathname}`;
+
+  shareBtn.addEventListener('click', () => {
+    shareBtn.classList.add('is-active');
+    embedBtn.classList.remove('is-active');
+    snippetUrlArea.value = url;
+    embedAction.innerText = 'Share';
+  });
+
+  embedBtn.addEventListener('click', () => {
+    embedBtn.classList.add('is-active');
+    shareBtn.classList.remove('is-active');
+    const scriptTag = `<script src="${url}.js"></script>`;
+    snippetUrlArea.value = scriptTag;
+    embedAction.innerText = 'Embed';
+  });
+};
diff --git a/app/assets/javascripts/vue_merge_request_widget/components/memory_usage.vue b/app/assets/javascripts/vue_merge_request_widget/components/memory_usage.vue
index 95c8b0a4c55..f012f9c6772 100644
--- a/app/assets/javascripts/vue_merge_request_widget/components/memory_usage.vue
+++ b/app/assets/javascripts/vue_merge_request_widget/components/memory_usage.vue
@@ -146,8 +146,8 @@ export default {
     </p>
     <p
       v-if="shouldShowMemoryGraph"
-      class="usage-info js-usage-info">
-      {{ memoryChangeMessage }}
+      class="usage-info js-usage-info"
+      v-html="memoryChangeMessage">
     </p>
     <p
       v-if="shouldShowLoadFailure"
diff --git a/app/assets/javascripts/vue_shared/components/skeleton_loading_container.vue b/app/assets/javascripts/vue_shared/components/skeleton_loading_container.vue
index b06493e6c66..16304e4815d 100644
--- a/app/assets/javascripts/vue_shared/components/skeleton_loading_container.vue
+++ b/app/assets/javascripts/vue_shared/components/skeleton_loading_container.vue
@@ -9,7 +9,7 @@
       lines: {
         type: Number,
         required: false,
-        default: 6,
+        default: 3,
       },
     },
     computed: {
diff --git a/app/assets/stylesheets/application.scss b/app/assets/stylesheets/application.scss
index 0665622fe4a..f2950308019 100644
--- a/app/assets/stylesheets/application.scss
+++ b/app/assets/stylesheets/application.scss
@@ -37,7 +37,11 @@
 /*
  * Code highlight
  */
-@import "highlight/**/*";
+@import "highlight/dark";
+@import "highlight/monokai";
+@import "highlight/solarized_dark";
+@import "highlight/solarized_light";
+@import "highlight/white";
 
 /*
  * Styles for JS behaviors.
diff --git a/app/assets/stylesheets/framework/animations.scss b/app/assets/stylesheets/framework/animations.scss
index 728f9a27aca..14cd32da9eb 100644
--- a/app/assets/stylesheets/framework/animations.scss
+++ b/app/assets/stylesheets/framework/animations.scss
@@ -187,12 +187,9 @@ a {
   animation: fadeInFull $fade-in-duration 1;
 }
 
-
 .animation-container {
-  background: $repo-editor-grey;
   height: 40px;
   overflow: hidden;
-  position: relative;
 
   &.animation-container-small {
     height: 12px;
@@ -205,60 +202,43 @@ a {
     }
   }
 
-  &::before {
-    animation-duration: 1s;
-    animation-fill-mode: forwards;
-    animation-iteration-count: infinite;
-    animation-name: blockTextShine;
-    animation-timing-function: linear;
-    background-image: $repo-editor-linear-gradient;
-    background-repeat: no-repeat;
-    background-size: 800px 45px;
-    content: ' ';
-    display: block;
-    height: 100%;
+  [class^="skeleton-line-"] {
     position: relative;
-  }
-
-  div {
-    background: $white-light;
-    height: 6px;
-    left: 0;
-    position: absolute;
-    right: 0;
-  }
-
-  .skeleton-line-1 {
-    left: 0;
-    top: 8px;
-  }
-
-  .skeleton-line-2 {
-    left: 150px;
-    top: 0;
+    background-color: $theme-gray-100;
     height: 10px;
-  }
+    overflow: hidden;
 
-  .skeleton-line-3 {
-    left: 0;
-    top: 23px;
-  }
+    &:not(:last-of-type) {
+      margin-bottom: 4px;
+    }
 
-  .skeleton-line-4 {
-    left: 0;
-    top: 38px;
+    &::after {
+      content: ' ';
+      display: block;
+      animation: blockTextShine 1s linear infinite forwards;
+      background-repeat: no-repeat;
+      background-size: cover;
+      background-image: linear-gradient(
+        to right,
+        $theme-gray-100 0%,
+        $theme-gray-50 20%,
+        $theme-gray-100 40%,
+        $theme-gray-100 100%
+      );
+      height: 10px;
+    }
   }
+}
 
-  .skeleton-line-5 {
-    left: 200px;
-    top: 28px;
-    height: 10px;
-  }
+$skeleton-line-widths: (
+  156px,
+  235px,
+  200px,
+);
 
-  .skeleton-line-6 {
-    top: 14px;
-    left: 230px;
-    height: 10px;
+@for $count from 1 through length($skeleton-line-widths) {
+  .skeleton-line-#{$count} {
+    width: nth($skeleton-line-widths, $count);
   }
 }
 
diff --git a/app/assets/stylesheets/framework/banner.scss b/app/assets/stylesheets/framework/banner.scss
index 6433b0c7855..02f3896d591 100644
--- a/app/assets/stylesheets/framework/banner.scss
+++ b/app/assets/stylesheets/framework/banner.scss
@@ -1,7 +1,7 @@
 .banner-callout {
   display: flex;
   position: relative;
-  flex-wrap: wrap;
+  align-items: start;
 
   .banner-close {
     position: absolute;
@@ -16,10 +16,25 @@
   }
 
   .banner-graphic {
-    margin: 20px auto;
+    margin: 0 $gl-padding $gl-padding 0;
   }
 
   &.banner-non-empty-state {
     border-bottom: 1px solid $border-color;
   }
+
+  @media (max-width: $screen-xs-max) {
+    justify-content: center;
+    flex-direction: column;
+    align-items: center;
+
+    .banner-title,
+    .banner-buttons {
+      text-align: center;
+    }
+
+    .banner-graphic {
+      margin-left: $gl-padding;
+    }
+  }
 }
diff --git a/app/assets/stylesheets/framework/buttons.scss b/app/assets/stylesheets/framework/buttons.scss
index 50d039348c4..02b8e5feee9 100644
--- a/app/assets/stylesheets/framework/buttons.scss
+++ b/app/assets/stylesheets/framework/buttons.scss
@@ -423,25 +423,43 @@
   }
 }
 
-.btn-link.btn-secondary-hover-link {
-  color: $gl-text-color-secondary;
+.btn-link {
+  padding: 0;
+  background-color: transparent;
+  color: $blue-600;
+  font-weight: normal;
+  border-radius: 0;
+  border-color: transparent;
 
   &:hover,
   &:active,
   &:focus {
-    color: $gl-link-color;
-    text-decoration: none;
+    color: $blue-800;
+    text-decoration: underline;
+    background-color: transparent;
+    border-color: transparent;
   }
-}
 
-.btn-link.btn-primary-hover-link {
-  color: inherit;
+  &.btn-secondary-hover-link {
+    color: $gl-text-color-secondary;
 
-  &:hover,
-  &:active,
-  &:focus {
-    color: $gl-link-color;
-    text-decoration: none;
+    &:hover,
+    &:active,
+    &:focus {
+      color: $gl-link-color;
+      text-decoration: none;
+    }
+  }
+
+  &.btn-primary-hover-link {
+    color: inherit;
+
+    &:hover,
+    &:active,
+    &:focus {
+      color: $gl-link-color;
+      text-decoration: none;
+    }
   }
 }
 
diff --git a/app/assets/stylesheets/framework/dropdowns.scss b/app/assets/stylesheets/framework/dropdowns.scss
index 4247fe3b271..f55bf0b7887 100644
--- a/app/assets/stylesheets/framework/dropdowns.scss
+++ b/app/assets/stylesheets/framework/dropdowns.scss
@@ -481,7 +481,8 @@
 
 .dropdown-menu-selectable {
   li {
-    a {
+    a,
+    button {
       padding: 8px 40px;
       position: relative;
 
diff --git a/app/assets/stylesheets/framework/snippets.scss b/app/assets/stylesheets/framework/snippets.scss
index b3720759129..bb185d2bd81 100644
--- a/app/assets/stylesheets/framework/snippets.scss
+++ b/app/assets/stylesheets/framework/snippets.scss
@@ -29,8 +29,10 @@
 }
 
 .snippet-title {
-  font-size: 24px;
+  color: $gl-text-color;
+  font-size: 2em;
   font-weight: $gl-font-weight-bold;
+  min-height: $header-height;
 }
 
 .snippet-edited-ago {
@@ -46,3 +48,26 @@
 .snippet-scope-menu .btn-new {
   margin-top: 15px;
 }
+
+.snippet-embed-input {
+  height: 35px;
+}
+
+.embed-snippet {
+  padding-right: 0;
+  padding-top: $gl-padding;
+
+  .form-control {
+    cursor: auto;
+    width: 101%;
+    margin-left: -1px;
+  }
+
+  .embed-toggle-list li button {
+    padding: 8px 40px;
+  }
+
+  .embed-toggle {
+    height: 35px;
+  }
+}
diff --git a/app/assets/stylesheets/framework/variables.scss b/app/assets/stylesheets/framework/variables.scss
index 8ee1bb03d55..37223175199 100644
--- a/app/assets/stylesheets/framework/variables.scss
+++ b/app/assets/stylesheets/framework/variables.scss
@@ -714,20 +714,6 @@ $color-average-score: $orange-400;
 $color-low-score: $red-400;
 
 /*
-Repo editor
-*/
-$repo-editor-grey: #f6f7f9;
-$repo-editor-grey-darker: #e9ebee;
-$repo-editor-linear-gradient: linear-gradient(
-  to right,
-  $repo-editor-grey 0%,
-  $repo-editor-grey-darker,
-  20%,
-  $repo-editor-grey 40%,
-  $repo-editor-grey 100%
-);
-
-/*
 Performance Bar
 */
 $perf-bar-text: #999;
diff --git a/app/assets/stylesheets/highlight/embedded.scss b/app/assets/stylesheets/highlight/embedded.scss
new file mode 100644
index 00000000000..44c8a1d39ec
--- /dev/null
+++ b/app/assets/stylesheets/highlight/embedded.scss
@@ -0,0 +1,3 @@
+.code {
+  @import "white_base";
+}
diff --git a/app/assets/stylesheets/highlight/white.scss b/app/assets/stylesheets/highlight/white.scss
index c3d8f0c61a2..355c8d223f7 100644
--- a/app/assets/stylesheets/highlight/white.scss
+++ b/app/assets/stylesheets/highlight/white.scss
@@ -1,292 +1,3 @@
-/* https://github.com/aahan/pygments-github-style */
-
-/*
-* White Syntax Colors
-*/
-$white-code-color: $gl-text-color;
-$white-highlight: #fafe3d;
-$white-pre-hll-bg: #f8eec7;
-$white-hll-bg: #f8f8f8;
-$white-over-bg: #ded7fc;
-$white-expanded-border: #e0e0e0;
-$white-expanded-bg: #f7f7f7;
-$white-c: #998;
-$white-err: #a61717;
-$white-err-bg: #e3d2d2;
-$white-cm: #998;
-$white-cp: #999;
-$white-c1: #998;
-$white-cs: #999;
-$white-gd: $black;
-$white-gd-bg: #fdd;
-$white-gd-x: $black;
-$white-gd-x-bg: #faa;
-$white-gr: #a00;
-$white-gh: #999;
-$white-gi: $black;
-$white-gi-bg: #dfd;
-$white-gi-x: $black;
-$white-gi-x-bg: #afa;
-$white-go: #888;
-$white-gp: #555;
-$white-gu: #800080;
-$white-gt: #a00;
-$white-kt: #458;
-$white-m: #099;
-$white-s: #d14;
-$white-n: #333;
-$white-na: teal;
-$white-nb: #0086b3;
-$white-nc: #458;
-$white-no: teal;
-$white-ni: purple;
-$white-ne: #900;
-$white-nf: #900;
-$white-nn: #555;
-$white-nt: navy;
-$white-nv: teal;
-$white-w: #bbb;
-$white-mf: #099;
-$white-mh: #099;
-$white-mi: #099;
-$white-mo: #099;
-$white-sb: #d14;
-$white-sc: #d14;
-$white-sd: #d14;
-$white-s2: #d14;
-$white-se: #d14;
-$white-sh: #d14;
-$white-si: #d14;
-$white-sx: #d14;
-$white-sr: #009926;
-$white-s1: #d14;
-$white-ss: #990073;
-$white-bp: #999;
-$white-vc: teal;
-$white-vg: teal;
-$white-vi: teal;
-$white-il: #099;
-$white-gc-color: #999;
-$white-gc-bg: #eaf2f5;
-
-
-@mixin matchLine {
-  color: $black-transparent;
-  background-color: $gray-light;
-}
-
 .code.white {
-  // Line numbers
-  .line-numbers,
-  .diff-line-num {
-    background-color: $gray-light;
-  }
-
-  .diff-line-num,
-  .diff-line-num a {
-    color: $black-transparent;
-  }
-
-  // Code itself
-  pre.code,
-  .diff-line-num {
-    border-color: $white-normal;
-  }
-
-  &,
-  pre.code,
-  .line_holder .line_content {
-    background-color: $white-light;
-    color: $white-code-color;
-  }
-
-  // Diff line
-  .line_holder {
-
-    &.match .line_content {
-      @include matchLine;
-    }
-
-    .diff-line-num {
-      &.old {
-        background-color: $line-number-old;
-        border-color: $line-removed-dark;
-
-        a {
-          color: scale-color($line-number-old, $red: -30%, $green: -30%, $blue: -30%);
-        }
-      }
-
-      &.new {
-        background-color: $line-number-new;
-        border-color: $line-added-dark;
-
-        a {
-          color: scale-color($line-number-new, $red: -30%, $green: -30%, $blue: -30%);
-        }
-      }
-
-      &.is-over,
-      &.hll:not(.empty-cell).is-over {
-        background-color: $white-over-bg;
-        border-color: darken($white-over-bg, 5%);
-
-        a {
-          color: darken($white-over-bg, 15%);
-        }
-      }
-
-      &.hll:not(.empty-cell) {
-        background-color: $line-number-select;
-        border-color: $line-select-yellow-dark;
-      }
-    }
-
-    &:not(.diff-expanded) + .diff-expanded,
-    &.diff-expanded + .line_holder:not(.diff-expanded) {
-      > .diff-line-num,
-      > .line_content {
-        border-top: 1px solid $white-expanded-border;
-      }
-    }
-
-    &.diff-expanded {
-      > .diff-line-num,
-      > .line_content {
-        background: $white-expanded-bg;
-        border-color: $white-expanded-bg;
-      }
-    }
-
-    .line_content {
-      &.old {
-        background-color: $line-removed;
-
-        &::before {
-          color: scale-color($line-number-old, $red: -30%, $green: -30%, $blue: -30%);
-        }
-
-        span.idiff {
-          background-color: $line-removed-dark;
-        }
-      }
-
-      &.new {
-        background-color: $line-added;
-
-        &::before {
-          color: scale-color($line-number-new, $red: -30%, $green: -30%, $blue: -30%);
-        }
-
-        span.idiff {
-          background-color: $line-added-dark;
-        }
-      }
-
-      &.match {
-        @include matchLine;
-      }
-
-      &.hll:not(.empty-cell) {
-        background-color: $line-select-yellow;
-      }
-    }
-  }
-
-  // highlight line via anchor
-  pre .hll {
-    background-color: $white-pre-hll-bg !important;
-  }
-
-  // Search result highlight
-  span.highlight_word {
-    background-color: $white-highlight !important;
-  }
-
-  // Links to URLs, emails, or dependencies
-  .line a {
-    color: $white-nb;
-  }
-
-  .hll { background-color: $white-hll-bg; }
-  .c { color: $white-c; font-style: italic; }
-  .err { color: $white-err; background-color: $white-err-bg; }
-  .k { font-weight: $gl-font-weight-bold; }
-  .o { font-weight: $gl-font-weight-bold; }
-  .cm { color: $white-cm; font-style: italic; }
-  .cp { color: $white-cp; font-weight: $gl-font-weight-bold; }
-  .c1 { color: $white-c1; font-style: italic; }
-  .cs { color: $white-cs; font-weight: $gl-font-weight-bold; font-style: italic; }
-
-  .gd {
-    color: $white-gd;
-    background-color: $white-gd-bg;
-
-    .x {
-      color: $white-gd-x;
-      background-color: $white-gd-x-bg;
-    }
-  }
-
-  .ge { font-style: italic; }
-  .gr { color: $white-gr; }
-  .gh { color: $white-gh; }
-
-  .gi {
-    color: $white-gi;
-    background-color: $white-gi-bg;
-
-    .x {
-      color: $white-gi-x;
-      background-color: $white-gi-x-bg;
-    }
-  }
-
-  .go { color: $white-go; }
-  .gp { color: $white-gp; }
-  .gs { font-weight: $gl-font-weight-bold; }
-  .gu { color: $white-gu; font-weight: $gl-font-weight-bold; }
-  .gt { color: $white-gt; }
-  .kc { font-weight: $gl-font-weight-bold; }
-  .kd { font-weight: $gl-font-weight-bold; }
-  .kn { font-weight: $gl-font-weight-bold; }
-  .kp { font-weight: $gl-font-weight-bold; }
-  .kr { font-weight: $gl-font-weight-bold; }
-  .kt { color: $white-kt; font-weight: $gl-font-weight-bold; }
-  .m { color: $white-m; }
-  .s { color: $white-s; }
-  .n { color: $white-n; }
-  .na { color: $white-na; }
-  .nb { color: $white-nb; }
-  .nc { color: $white-nc; font-weight: $gl-font-weight-bold; }
-  .no { color: $white-no; }
-  .ni { color: $white-ni; }
-  .ne { color: $white-ne; font-weight: $gl-font-weight-bold; }
-  .nf { color: $white-nf; font-weight: $gl-font-weight-bold; }
-  .nn { color: $white-nn; }
-  .nt { color: $white-nt; }
-  .nv { color: $white-nv; }
-  .ow { font-weight: $gl-font-weight-bold; }
-  .w { color: $white-w; }
-  .mf { color: $white-mf; }
-  .mh { color: $white-mh; }
-  .mi { color: $white-mi; }
-  .mo { color: $white-mo; }
-  .sb { color: $white-sb; }
-  .sc { color: $white-sc; }
-  .sd { color: $white-sd; }
-  .s2 { color: $white-s2; }
-  .se { color: $white-se; }
-  .sh { color: $white-sh; }
-  .si { color: $white-si; }
-  .sx { color: $white-sx; }
-  .sr { color: $white-sr; }
-  .s1 { color: $white-s1; }
-  .ss { color: $white-ss; }
-  .bp { color: $white-bp; }
-  .vc { color: $white-vc; }
-  .vg { color: $white-vg; }
-  .vi { color: $white-vi; }
-  .il { color: $white-il; }
-  .gc { color: $white-gc-color; background-color: $white-gc-bg; }
+  @import "white_base";
 }
diff --git a/app/assets/stylesheets/highlight/white_base.scss b/app/assets/stylesheets/highlight/white_base.scss
new file mode 100644
index 00000000000..8cc5252648d
--- /dev/null
+++ b/app/assets/stylesheets/highlight/white_base.scss
@@ -0,0 +1,290 @@
+/* https://github.com/aahan/pygments-github-style */
+
+/*
+* White Syntax Colors
+*/
+$white-code-color: $gl-text-color;
+$white-highlight: #fafe3d;
+$white-pre-hll-bg: #f8eec7;
+$white-hll-bg: #f8f8f8;
+$white-over-bg: #ded7fc;
+$white-expanded-border: #e0e0e0;
+$white-expanded-bg: #f7f7f7;
+$white-c: #998;
+$white-err: #a61717;
+$white-err-bg: #e3d2d2;
+$white-cm: #998;
+$white-cp: #999;
+$white-c1: #998;
+$white-cs: #999;
+$white-gd: $black;
+$white-gd-bg: #fdd;
+$white-gd-x: $black;
+$white-gd-x-bg: #faa;
+$white-gr: #a00;
+$white-gh: #999;
+$white-gi: $black;
+$white-gi-bg: #dfd;
+$white-gi-x: $black;
+$white-gi-x-bg: #afa;
+$white-go: #888;
+$white-gp: #555;
+$white-gu: #800080;
+$white-gt: #a00;
+$white-kt: #458;
+$white-m: #099;
+$white-s: #d14;
+$white-n: #333;
+$white-na: teal;
+$white-nb: #0086b3;
+$white-nc: #458;
+$white-no: teal;
+$white-ni: purple;
+$white-ne: #900;
+$white-nf: #900;
+$white-nn: #555;
+$white-nt: navy;
+$white-nv: teal;
+$white-w: #bbb;
+$white-mf: #099;
+$white-mh: #099;
+$white-mi: #099;
+$white-mo: #099;
+$white-sb: #d14;
+$white-sc: #d14;
+$white-sd: #d14;
+$white-s2: #d14;
+$white-se: #d14;
+$white-sh: #d14;
+$white-si: #d14;
+$white-sx: #d14;
+$white-sr: #009926;
+$white-s1: #d14;
+$white-ss: #990073;
+$white-bp: #999;
+$white-vc: teal;
+$white-vg: teal;
+$white-vi: teal;
+$white-il: #099;
+$white-gc-color: #999;
+$white-gc-bg: #eaf2f5;
+
+
+@mixin matchLine {
+  color: $black-transparent;
+  background-color: $gray-light;
+}
+
+  // Line numbers
+.line-numbers,
+.diff-line-num {
+  background-color: $gray-light;
+}
+
+.diff-line-num,
+.diff-line-num a {
+  color: $black-transparent;
+}
+
+// Code itself
+pre.code,
+.diff-line-num {
+  border-color: $white-normal;
+}
+
+&,
+pre.code,
+.line_holder .line_content {
+  background-color: $white-light;
+  color: $white-code-color;
+}
+
+// Diff line
+.line_holder {
+
+  &.match .line_content {
+    @include matchLine;
+  }
+
+  .diff-line-num {
+    &.old {
+      background-color: $line-number-old;
+      border-color: $line-removed-dark;
+
+      a {
+        color: scale-color($line-number-old, $red: -30%, $green: -30%, $blue: -30%);
+      }
+    }
+
+    &.new {
+      background-color: $line-number-new;
+      border-color: $line-added-dark;
+
+      a {
+        color: scale-color($line-number-new, $red: -30%, $green: -30%, $blue: -30%);
+      }
+    }
+
+    &.is-over,
+    &.hll:not(.empty-cell).is-over {
+      background-color: $white-over-bg;
+      border-color: darken($white-over-bg, 5%);
+
+      a {
+        color: darken($white-over-bg, 15%);
+      }
+    }
+
+    &.hll:not(.empty-cell) {
+      background-color: $line-number-select;
+      border-color: $line-select-yellow-dark;
+    }
+  }
+
+  &:not(.diff-expanded) + .diff-expanded,
+  &.diff-expanded + .line_holder:not(.diff-expanded) {
+    > .diff-line-num,
+    > .line_content {
+      border-top: 1px solid $white-expanded-border;
+    }
+  }
+
+  &.diff-expanded {
+    > .diff-line-num,
+    > .line_content {
+      background: $white-expanded-bg;
+      border-color: $white-expanded-bg;
+    }
+  }
+
+  .line_content {
+    &.old {
+      background-color: $line-removed;
+
+      &::before {
+        color: scale-color($line-number-old, $red: -30%, $green: -30%, $blue: -30%);
+      }
+
+      span.idiff {
+        background-color: $line-removed-dark;
+      }
+    }
+
+    &.new {
+      background-color: $line-added;
+
+      &::before {
+        color: scale-color($line-number-new, $red: -30%, $green: -30%, $blue: -30%);
+      }
+
+      span.idiff {
+        background-color: $line-added-dark;
+      }
+    }
+
+    &.match {
+      @include matchLine;
+    }
+
+    &.hll:not(.empty-cell) {
+      background-color: $line-select-yellow;
+    }
+  }
+}
+
+// highlight line via anchor
+pre .hll {
+  background-color: $white-pre-hll-bg !important;
+}
+
+  // Search result highlight
+span.highlight_word {
+  background-color: $white-highlight !important;
+}
+
+  // Links to URLs, emails, or dependencies
+.line a {
+  color: $white-nb;
+}
+
+.hll { background-color: $white-hll-bg; }
+.c { color: $white-c; font-style: italic; }
+.err { color: $white-err; background-color: $white-err-bg; }
+.k { font-weight: $gl-font-weight-bold; }
+.o { font-weight: $gl-font-weight-bold; }
+.cm { color: $white-cm; font-style: italic; }
+.cp { color: $white-cp; font-weight: $gl-font-weight-bold; }
+.c1 { color: $white-c1; font-style: italic; }
+.cs { color: $white-cs; font-weight: $gl-font-weight-bold; font-style: italic; }
+
+.gd {
+  color: $white-gd;
+  background-color: $white-gd-bg;
+
+  .x {
+    color: $white-gd-x;
+    background-color: $white-gd-x-bg;
+  }
+}
+
+.ge { font-style: italic; }
+.gr { color: $white-gr; }
+.gh { color: $white-gh; }
+
+.gi {
+  color: $white-gi;
+  background-color: $white-gi-bg;
+
+  .x {
+    color: $white-gi-x;
+    background-color: $white-gi-x-bg;
+  }
+}
+
+.go { color: $white-go; }
+.gp { color: $white-gp; }
+.gs { font-weight: $gl-font-weight-bold; }
+.gu { color: $white-gu; font-weight: $gl-font-weight-bold; }
+.gt { color: $white-gt; }
+.kc { font-weight: $gl-font-weight-bold; }
+.kd { font-weight: $gl-font-weight-bold; }
+.kn { font-weight: $gl-font-weight-bold; }
+.kp { font-weight: $gl-font-weight-bold; }
+.kr { font-weight: $gl-font-weight-bold; }
+.kt { color: $white-kt; font-weight: $gl-font-weight-bold; }
+.m { color: $white-m; }
+.s { color: $white-s; }
+.n { color: $white-n; }
+.na { color: $white-na; }
+.nb { color: $white-nb; }
+.nc { color: $white-nc; font-weight: $gl-font-weight-bold; }
+.no { color: $white-no; }
+.ni { color: $white-ni; }
+.ne { color: $white-ne; font-weight: $gl-font-weight-bold; }
+.nf { color: $white-nf; font-weight: $gl-font-weight-bold; }
+.nn { color: $white-nn; }
+.nt { color: $white-nt; }
+.nv { color: $white-nv; }
+.ow { font-weight: $gl-font-weight-bold; }
+.w { color: $white-w; }
+.mf { color: $white-mf; }
+.mh { color: $white-mh; }
+.mi { color: $white-mi; }
+.mo { color: $white-mo; }
+.sb { color: $white-sb; }
+.sc { color: $white-sc; }
+.sd { color: $white-sd; }
+.s2 { color: $white-s2; }
+.se { color: $white-se; }
+.sh { color: $white-sh; }
+.si { color: $white-si; }
+.sx { color: $white-sx; }
+.sr { color: $white-sr; }
+.s1 { color: $white-s1; }
+.ss { color: $white-ss; }
+.bp { color: $white-bp; }
+.vc { color: $white-vc; }
+.vg { color: $white-vg; }
+.vi { color: $white-vi; }
+.il { color: $white-il; }
+.gc { color: $white-gc-color; background-color: $white-gc-bg; }
diff --git a/app/assets/stylesheets/pages/milestone.scss b/app/assets/stylesheets/pages/milestone.scss
index 8f9333b00ef..16e6d089d87 100644
--- a/app/assets/stylesheets/pages/milestone.scss
+++ b/app/assets/stylesheets/pages/milestone.scss
@@ -194,3 +194,38 @@
 .issuable-row {
   background-color: $white-light;
 }
+
+.milestone-deprecation-message {
+  .popover {
+    padding: 0;
+  }
+
+  .popover-content {
+    padding: 0;
+  }
+}
+
+.milestone-popover-body {
+  padding: $gl-padding-8;
+  background-color: $gray-light;
+}
+
+.milestone-popover-footer {
+  padding: $gl-padding-8 $gl-padding;
+  border-top: 1px solid $white-dark;
+}
+
+.milestone-popover-instructions-list {
+  padding-left: 2em;
+
+  > li {
+    padding-left: 1em;
+  }
+}
+
+@media (max-width: $screen-xs-max) {
+  .milestone-banner-text,
+  .milestone-banner-link {
+    display: inline;
+  }
+}
diff --git a/app/assets/stylesheets/pages/repo.scss b/app/assets/stylesheets/pages/repo.scss
index 7427036e928..5015298e8ba 100644
--- a/app/assets/stylesheets/pages/repo.scss
+++ b/app/assets/stylesheets/pages/repo.scss
@@ -429,6 +429,7 @@
   .projects-sidebar {
     display: flex;
     flex-direction: column;
+    height: 100%;
 
     .context-header {
       width: auto;
@@ -438,8 +439,8 @@
 
   .multi-file-commit-panel-inner {
     display: flex;
-    flex: 1;
     flex-direction: column;
+    height: 100%;
   }
 
   .multi-file-commit-panel-inner-scroll {
diff --git a/app/assets/stylesheets/snippets.scss b/app/assets/stylesheets/snippets.scss
new file mode 100644
index 00000000000..0d6b0735f70
--- /dev/null
+++ b/app/assets/stylesheets/snippets.scss
@@ -0,0 +1,156 @@
+@import "framework/variables";
+
+.gitlab-embed-snippets {
+  @import "highlight/embedded";
+  @import "framework/images";
+
+  $border-style: 1px solid $border-color;
+
+  font-family: $regular_font;
+  font-size: $gl-font-size;
+  line-height: $code_line_height;
+  color: $gl-text-color;
+  margin: 20px;
+  font-weight: 200;
+
+  .gl-snippet-icon {
+    display: inline-block;
+    background: url(asset_path('ext_snippet_icons/ext_snippet_icons.png')) no-repeat;
+    overflow: hidden;
+    text-align: left;
+    width: 16px;
+    height: 16px;
+    background-size: cover;
+
+    &.gl-snippet-icon-doc_code { background-position: 0 0;  }
+    &.gl-snippet-icon-doc_text {  background-position: 0 -16px; }
+    &.gl-snippet-icon-download {  background-position: 0 -32px; }
+  }
+
+  .blob-viewer {
+    background-color: $white-light;
+    text-align: left;
+  }
+
+  .file-content.code {
+    border: $border-style;
+    border-radius: 0 0 4px 4px;
+    display: flex;
+    box-shadow: none;
+    margin: 0;
+    padding: 0;
+    table-layout: fixed;
+
+    .blob-content {
+      overflow-x: auto;
+
+      pre {
+        padding: 10px;
+        border: 0;
+        border-radius: 0;
+        font-family: $monospace_font;
+        font-size: $code_font_size;
+        line-height: $code_line_height;
+        margin: 0;
+        overflow: auto;
+        overflow-y: hidden;
+        white-space: pre;
+        word-wrap: normal;
+        border-left: $border-style;
+      }
+    }
+
+    .line-numbers {
+      padding: 10px;
+      text-align: right;
+      float: left;
+
+      .diff-line-num {
+        font-family: $monospace_font;
+        display: block;
+        font-size: $code_font_size;
+        min-height: $code_line_height;
+        white-space: nowrap;
+        color: $black-transparent;
+        min-width: 30px;
+      }
+
+      .diff-line-num:hover {
+        color: $almost-black;
+        cursor: pointer;
+      }
+    }
+  }
+
+  .file-title-flex-parent {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    background-color: $gray-light;
+    border: $border-style;
+    border-bottom: 0;
+    padding: $gl-padding-top $gl-padding;
+    margin: 0;
+    border-radius: $border-radius-default $border-radius-default 0 0;
+
+    .file-header-content {
+      .file-title-name {
+        font-weight: $gl-font-weight-bold;
+      }
+
+      .gitlab-embedded-snippets-title {
+        text-decoration: none;
+        color: $gl-text-color;
+
+        &:hover {
+          text-decoration: underline;
+        }
+      }
+
+      .gitlab-logo {
+        display: inline-block;
+        padding-left: 5px;
+        text-decoration: none;
+        color: $gl-text-color-secondary;
+
+        .logo-text {
+          background: image_url('ext_snippet_icons/logo.png') no-repeat left center;
+          background-size: 18px;
+          font-weight: $gl-font-weight-normal;
+          padding-left: 24px;
+        }
+      }
+    }
+
+    img,
+    .gl-snippet-icon {
+      display: inline-block;
+      vertical-align: middle;
+    }
+  }
+
+  .btn-group {
+    a.btn {
+      background-color: $white-light;
+      text-decoration: none;
+      padding: 7px 9px;
+      border: $border-style;
+      border-right: 0;
+
+      &:hover {
+        background-color: $white-normal;
+        border-color: $border-white-normal;
+        text-decoration: none;
+      }
+
+      &:first-child {
+        border-radius: 3px 0 0 3px;
+      }
+
+      &:last-child {
+        border-radius: 0 3px 3px 0;
+        border-right: $border-style;
+      }
+    }
+  }
+}
diff --git a/app/controllers/admin/application_settings_controller.rb b/app/controllers/admin/application_settings_controller.rb
index 145f74d9e59..8958eab0423 100644
--- a/app/controllers/admin/application_settings_controller.rb
+++ b/app/controllers/admin/application_settings_controller.rb
@@ -57,22 +57,17 @@ class Admin::ApplicationSettingsController < Admin::ApplicationController
 
   def application_setting_params
     params[:application_setting] ||= {}
-    import_sources = params[:application_setting][:import_sources]
 
-    if import_sources.nil?
-      params[:application_setting][:import_sources] = []
-    else
-      import_sources.map! do |source|
-        source.to_str
-      end
-    end
+    if params[:application_setting].key?(:enabled_oauth_sign_in_sources)
+      enabled_oauth_sign_in_sources = params[:application_setting].delete(:enabled_oauth_sign_in_sources)
+      enabled_oauth_sign_in_sources&.delete("")
 
-    enabled_oauth_sign_in_sources = params[:application_setting].delete(:enabled_oauth_sign_in_sources)
-
-    params[:application_setting][:disabled_oauth_sign_in_sources] =
-      AuthHelper.button_based_providers.map(&:to_s) -
-      Array(enabled_oauth_sign_in_sources)
+      params[:application_setting][:disabled_oauth_sign_in_sources] =
+        AuthHelper.button_based_providers.map(&:to_s) -
+        Array(enabled_oauth_sign_in_sources)
+    end
 
+    params[:application_setting][:import_sources]&.delete("")
     params[:application_setting][:restricted_visibility_levels]&.delete("")
     params.delete(:domain_blacklist_raw) if params[:domain_blacklist_file]
 
diff --git a/app/controllers/concerns/snippets_actions.rb b/app/controllers/concerns/snippets_actions.rb
index 9095cc7f783..120614739aa 100644
--- a/app/controllers/concerns/snippets_actions.rb
+++ b/app/controllers/concerns/snippets_actions.rb
@@ -17,6 +17,10 @@ module SnippetsActions
   end
   # rubocop:enable Gitlab/ModuleWithInstanceVariables
 
+  def js_request?
+    request.format.js?
+  end
+
   private
 
   def convert_line_endings(content)
diff --git a/app/controllers/projects/snippets_controller.rb b/app/controllers/projects/snippets_controller.rb
index 7c19aa7bb23..208a1d19862 100644
--- a/app/controllers/projects/snippets_controller.rb
+++ b/app/controllers/projects/snippets_controller.rb
@@ -5,6 +5,8 @@ class Projects::SnippetsController < Projects::ApplicationController
   include SnippetsActions
   include RendersBlob
 
+  skip_before_action :verify_authenticity_token, only: [:show], if: :js_request?
+
   before_action :check_snippets_available!
   before_action :snippet, only: [:show, :edit, :destroy, :update, :raw, :toggle_award_emoji, :mark_as_spam]
 
@@ -71,6 +73,7 @@ class Projects::SnippetsController < Projects::ApplicationController
       format.json do
         render_blob_json(blob)
       end
+      format.js { render 'shared/snippets/show'}
     end
   end
 
diff --git a/app/controllers/snippets_controller.rb b/app/controllers/snippets_controller.rb
index be2d3f638ff..3d51520ddf4 100644
--- a/app/controllers/snippets_controller.rb
+++ b/app/controllers/snippets_controller.rb
@@ -6,6 +6,8 @@ class SnippetsController < ApplicationController
   include RendersBlob
   include PreviewMarkdown
 
+  skip_before_action :verify_authenticity_token, only: [:show], if: :js_request?
+
   before_action :snippet, only: [:show, :edit, :destroy, :update, :raw]
 
   # Allow read snippet
@@ -77,6 +79,8 @@ class SnippetsController < ApplicationController
       format.json do
         render_blob_json(blob)
       end
+
+      format.js { render 'shared/snippets/show' }
     end
   end
 
diff --git a/app/helpers/application_settings_helper.rb b/app/helpers/application_settings_helper.rb
index b3b080e6dcf..3fbb32c5229 100644
--- a/app/helpers/application_settings_helper.rb
+++ b/app/helpers/application_settings_helper.rb
@@ -74,10 +74,12 @@ module ApplicationSettingsHelper
       css_class = 'btn'
       css_class << ' active' unless disabled
       checkbox_name = 'application_setting[enabled_oauth_sign_in_sources][]'
+      name = Gitlab::Auth::OAuth::Provider.label_for(source)
 
       label_tag(checkbox_name, class: css_class) do
         check_box_tag(checkbox_name, source, !disabled,
-                      autocomplete: 'off') + Gitlab::Auth::OAuth::Provider.label_for(source)
+                      autocomplete: 'off',
+                      id: name.tr(' ', '_')) + name
       end
     end
   end
diff --git a/app/helpers/icons_helper.rb b/app/helpers/icons_helper.rb
index 08b7168b117..58372edff3c 100644
--- a/app/helpers/icons_helper.rb
+++ b/app/helpers/icons_helper.rb
@@ -43,6 +43,10 @@ module IconsHelper
     content_tag(:svg, content_tag(:use, "", { "xlink:href" => "#{sprite_icon_path}##{icon_name}" } ), class: css_classes.empty? ? nil : css_classes)
   end
 
+  def external_snippet_icon(name)
+    content_tag(:span, "", class: "gl-snippet-icon gl-snippet-icon-#{name}")
+  end
+
   def audit_icon(names, options = {})
     case names
     when "standard"
diff --git a/app/helpers/snippets_helper.rb b/app/helpers/snippets_helper.rb
index 00e7e4230b9..733832c1bbb 100644
--- a/app/helpers/snippets_helper.rb
+++ b/app/helpers/snippets_helper.rb
@@ -101,4 +101,39 @@ module SnippetsHelper
     # Return snippet with chunk array
     { snippet_object: snippet, snippet_chunks: snippet_chunks }
   end
+
+  def snippet_embed
+    "<script src=\"#{url_for(only_path: false, overwrite_params: nil)}.js\"></script>"
+  end
+
+  def embedded_snippet_raw_button
+    blob = @snippet.blob
+    return if blob.empty? || blob.raw_binary? || blob.stored_externally?
+
+    snippet_raw_url = if @snippet.is_a?(PersonalSnippet)
+                        raw_snippet_url(@snippet)
+                      else
+                        raw_project_snippet_url(@snippet.project, @snippet)
+                      end
+
+    link_to external_snippet_icon('doc_code'), snippet_raw_url, class: 'btn', target: '_blank', rel: 'noopener noreferrer', title: 'Open raw'
+  end
+
+  def embedded_snippet_download_button
+    download_url = if @snippet.is_a?(PersonalSnippet)
+                     raw_snippet_url(@snippet, inline: false)
+                   else
+                     raw_project_snippet_url(@snippet.project, @snippet, inline: false)
+                   end
+
+    link_to external_snippet_icon('download'), download_url, class: 'btn', target: '_blank', title: 'Download', rel: 'noopener noreferrer'
+  end
+
+  def public_snippet?
+    if @snippet.project_id?
+      can?(nil, :read_project_snippet, @snippet)
+    else
+      can?(nil, :read_personal_snippet, @snippet)
+    end
+  end
 end
diff --git a/app/views/admin/application_settings/_signin.html.haml b/app/views/admin/application_settings/_signin.html.haml
index 2f06c1322f9..4d74568d69a 100644
--- a/app/views/admin/application_settings/_signin.html.haml
+++ b/app/views/admin/application_settings/_signin.html.haml
@@ -23,7 +23,8 @@
               must be used to authenticate.
     - if omniauth_enabled? && button_based_providers.any?
       .form-group.row
-        = f.label :enabled_oauth_sign_in_sources, 'Enabled OAuth sign-in sources', class: 'col-form-label col-sm-2'
+        = f.label :enabled_oauth_sign_in_sources, 'Enabled OAuth sign-in sources', class: 'control-label col-sm-2'
+        = hidden_field_tag 'application_setting[enabled_oauth_sign_in_sources][]'
         .col-sm-10
           .btn-group{ data: { toggle: 'buttons' } }
             - oauth_providers_checkboxes.each do |source|
diff --git a/app/views/admin/application_settings/_visibility_and_access.html.haml b/app/views/admin/application_settings/_visibility_and_access.html.haml
index 10e9f0b0303..c37a89237f0 100644
--- a/app/views/admin/application_settings/_visibility_and_access.html.haml
+++ b/app/views/admin/application_settings/_visibility_and_access.html.haml
@@ -32,6 +32,7 @@
     .form-group.row
       = f.label :import_sources, class: 'col-form-label col-sm-2'
       .col-sm-10
+        = hidden_field_tag 'application_setting[import_sources][]'
         - import_sources_checkboxes('import-sources-help').each do |source|
           .form-check= source
         %span.form-text.text-muted#import-sources-help
diff --git a/app/views/admin/dashboard/index.html.haml b/app/views/admin/dashboard/index.html.haml
index 20cf024d703..78706492ba3 100644
--- a/app/views/admin/dashboard/index.html.haml
+++ b/app/views/admin/dashboard/index.html.haml
@@ -126,6 +126,7 @@
               GitLab
               %span.float-right
                 = Gitlab::VERSION
+                = "(#{Gitlab::REVISION})"
             %p
               GitLab Shell
               %span.float-right
diff --git a/app/views/profiles/two_factor_auths/show.html.haml b/app/views/profiles/two_factor_auths/show.html.haml
index d1c3c7ed294..e35ebdea435 100644
--- a/app/views/profiles/two_factor_auths/show.html.haml
+++ b/app/views/profiles/two_factor_auths/show.html.haml
@@ -20,7 +20,7 @@
       - else
         %p
           Download the Google Authenticator application from App Store or Google Play Store and scan this code.
-          More information is available in the #{link_to('documentation', help_page_path('profile/two_factor_authentication'))}.
+          More information is available in the #{link_to('documentation', help_page_path('user/profile/account/two_factor_authentication'))}.
         .row.append-bottom-10
           .col-md-4
             = raw @qr_code
diff --git a/app/views/projects/blob/_viewer.html.haml b/app/views/projects/blob/_viewer.html.haml
index 3124443b4e4..9c760c81527 100644
--- a/app/views/projects/blob/_viewer.html.haml
+++ b/app/views/projects/blob/_viewer.html.haml
@@ -2,6 +2,7 @@
 - render_error = viewer.render_error
 - rich_type = viewer.type == :rich ? viewer.partial_name : nil
 - load_async = local_assigns.fetch(:load_async, viewer.load_async? && render_error.nil?)
+- external_embed = local_assigns.fetch(:external_embed, false)
 
 - viewer_url = local_assigns.fetch(:viewer_url) { url_for(params.merge(viewer: viewer.type, format: :json)) } if load_async
 .blob-viewer{ data: { type: viewer.type, rich_type: rich_type, url: viewer_url }, class: ('hidden' if hidden) }
@@ -9,6 +10,8 @@
     = render 'projects/blob/render_error', viewer: viewer
   - elsif load_async
     = render viewer.loading_partial_path, viewer: viewer
+  - elsif external_embed
+    = render 'projects/blob/viewers/highlight_embed', blob: viewer.blob
   - else
     - viewer.prepare!
 
diff --git a/app/views/projects/blob/viewers/_highlight_embed.html.haml b/app/views/projects/blob/viewers/_highlight_embed.html.haml
new file mode 100644
index 00000000000..9bd4ef6ad0b
--- /dev/null
+++ b/app/views/projects/blob/viewers/_highlight_embed.html.haml
@@ -0,0 +1,7 @@
+.file-content.code.js-syntax-highlight
+  .line-numbers
+    - if blob.data.present?
+      - blob.data.each_line.each_with_index do |_, index|
+        %span.diff-line-num= index + 1
+  .blob-content{ data: { blob_id: blob.id } }
+    = highlight(blob.path, blob.data, repository: nil, plain: blob.no_highlighting?)
diff --git a/app/views/shared/_auto_devops_callout.html.haml b/app/views/shared/_auto_devops_callout.html.haml
index 934d65e8b42..e9ac192f5f7 100644
--- a/app/views/shared/_auto_devops_callout.html.haml
+++ b/app/views/shared/_auto_devops_callout.html.haml
@@ -1,14 +1,14 @@
-.js-autodevops-banner.banner-callout.banner-non-empty-state.append-bottom-20{ data: { uid: 'auto_devops_settings_dismissed', project_path: project_path(@project) } }
+.js-autodevops-banner.banner-callout.banner-non-empty-state.append-bottom-20.prepend-top-10{ data: { uid: 'auto_devops_settings_dismissed', project_path: project_path(@project) } }
   .banner-graphic
     = custom_icon('icon_autodevops')
 
-  .prepend-top-10.prepend-left-10.append-bottom-10
-    %h5= s_('AutoDevOps|Auto DevOps (Beta)')
+  .banner-body.prepend-left-10.append-bottom-10
+    %h5.banner-title= s_('AutoDevOps|Auto DevOps (Beta)')
     %p= s_('AutoDevOps|It will automatically build, test, and deploy your application based on a predefined CI/CD configuration.')
     %p
       - link = link_to(s_('AutoDevOps|Auto DevOps documentation'), help_page_path('topics/autodevops/index.md'), target: '_blank', rel: 'noopener noreferrer')
       = s_('AutoDevOps|Learn more in the %{link_to_documentation}').html_safe % { link_to_documentation: link }
-    .prepend-top-10
+    .banner-buttons
       = link_to s_('AutoDevOps|Enable in settings'), project_settings_ci_cd_path(@project, anchor: 'js-general-pipeline-settings'), class: 'btn js-close-callout'
 
   %button.btn-transparent.banner-close.close.js-close-callout{ type: 'button',
diff --git a/app/views/shared/members/_group.html.haml b/app/views/shared/members/_group.html.haml
index 4466f9fcd06..21e1e1634b2 100644
--- a/app/views/shared/members/_group.html.haml
+++ b/app/views/shared/members/_group.html.haml
@@ -8,7 +8,7 @@
     %strong
       = link_to group.full_name, group_path(group)
     .cgray
-      Joined #{time_ago_with_tooltip(group.created_at)}
+      Given access #{time_ago_with_tooltip(group_link.created_at)}
       - if group_link.expires?
         ·
         %span{ class: ('text-warning' if group_link.expires_soon?) }
diff --git a/app/views/shared/members/_member.html.haml b/app/views/shared/members/_member.html.haml
index a96321bf4fb..8826a6aadc8 100644
--- a/app/views/shared/members/_member.html.haml
+++ b/app/views/shared/members/_member.html.haml
@@ -29,7 +29,7 @@
             Requested
             = time_ago_with_tooltip(member.requested_at)
           - else
-            Joined #{time_ago_with_tooltip(member.created_at)}
+            Given access #{time_ago_with_tooltip(member.created_at)}
           - if member.expires?
             ·
             %span{ class: "#{"text-warning" if member.expires_soon?} has-tooltip", title: member.expires_at.to_time.in_time_zone.to_s(:medium) }
diff --git a/app/views/shared/milestones/_deprecation_message.html.haml b/app/views/shared/milestones/_deprecation_message.html.haml
new file mode 100644
index 00000000000..4a8f90937ea
--- /dev/null
+++ b/app/views/shared/milestones/_deprecation_message.html.haml
@@ -0,0 +1,14 @@
+.banner-callout.compact.milestone-deprecation-message.js-milestone-deprecation-message.prepend-top-20
+  .banner-graphic= image_tag 'illustrations/milestone_removing-page.svg'
+  .banner-body.prepend-left-10.append-right-10
+    %h5.banner-title.prepend-top-0= _('This page will be removed in a future release.')
+    %p.milestone-banner-text= _('Use group milestones to manage issues from multiple projects in the same milestone.')
+    = button_tag _('Promote these project milestones into a group milestone.'), class: 'btn btn-link js-popover-link text-align-left milestone-banner-link'
+    .milestone-banner-buttons.prepend-top-20= link_to _('Learn more'), help_page_url('user/project/milestones/index', anchor: 'promoting-project-milestones-to-group-milestones'), class: 'btn btn-default', target: '_blank'
+
+  %template.js-milestone-deprecation-message-template
+    .milestone-popover-body
+      %ol.milestone-popover-instructions-list.append-bottom-0
+        %li= _('Click any <strong>project name</strong> in the project list below to navigate to the project milestone.').html_safe
+        %li= _('Click the <strong>Promote</strong> button in the top right corner to promote it to a group milestone.').html_safe
+    .milestone-popover-footer= link_to _('Learn more'), help_page_url('user/project/milestones/index', anchor: 'promoting-project-milestones-to-group-milestones'), class: 'btn btn-link prepend-left-0', target: '_blank'
diff --git a/app/views/shared/milestones/_top.html.haml b/app/views/shared/milestones/_top.html.haml
index b47f2358606..6acf671c432 100644
--- a/app/views/shared/milestones/_top.html.haml
+++ b/app/views/shared/milestones/_top.html.haml
@@ -1,7 +1,8 @@
-- page_title @milestone.title
+- page_title milestone.title
 - @breadcrumb_link = dashboard_milestone_path(milestone.safe_title, title: milestone.title)
 
 - group = local_assigns[:group]
+- is_dynamic_milestone = milestone.legacy_group_milestone? || milestone.dashboard_milestone?
 
 .detail-page-header
   %a.btn.btn-secondary.btn-grouped.float-right.d-block.d-sm-none.js-sidebar-toggle{ href: "#" }
@@ -31,21 +32,23 @@
         - else
           = link_to 'Reopen Milestone', group_milestone_route(milestone, {state_event: :activate }), method: :put, class: "btn btn-grouped btn-reopen"
 
+= render 'shared/milestones/deprecation_message' if is_dynamic_milestone
+
 .detail-page-description.milestone-detail
   %h2.title
     = markdown_field(milestone, :title)
-  - if @milestone.group_milestone? && @milestone.description.present?
+  - if milestone.group_milestone? && milestone.description.present?
     %div
       .description
         .wiki
-          = markdown_field(@milestone, :description)
+          = markdown_field(milestone, :description)
 
 - if milestone.complete?(current_user) && milestone.active?
   .alert.alert-success.prepend-top-default
     - close_msg = group ? 'You may close the milestone now.' : 'Navigate to the project to close the milestone.'
     %span All issues for this milestone are closed. #{close_msg}
 
-- if @milestone.legacy_group_milestone? || @milestone.dashboard_milestone?
+- if is_dynamic_milestone
   .table-holder
     %table.table
       %thead
@@ -68,7 +71,7 @@
               Open
           %td
             = ms.expires_at
-- elsif @milestone.group_milestone?
+- elsif milestone.group_milestone?
   %br
   View
   = link_to 'Issues', issues_group_path(@group, milestone_title: milestone.title)
diff --git a/app/views/shared/snippets/_embed.html.haml b/app/views/shared/snippets/_embed.html.haml
new file mode 100644
index 00000000000..2d93e51a2d9
--- /dev/null
+++ b/app/views/shared/snippets/_embed.html.haml
@@ -0,0 +1,24 @@
+- blob = @snippet.blob
+.gitlab-embed-snippets
+  .js-file-title.file-title-flex-parent
+    .file-header-content
+      = external_snippet_icon('doc_text')
+
+      %strong.file-title-name
+        %a.gitlab-embedded-snippets-title{ href: url_for(only_path: false, overwrite_params: nil) }
+          = blob.name
+
+      %small
+        = number_to_human_size(blob.raw_size)
+      %a.gitlab-logo{ href: url_for(only_path: false, overwrite_params: nil), title: 'view on gitlab' }
+        on &nbsp;
+        %span.logo-text
+          GitLab
+
+    .file-actions.hidden-xs
+      .btn-group{ role: "group" }<
+        = embedded_snippet_raw_button
+
+        = embedded_snippet_download_button
+  %article.file-holder.snippet-file-content
+    = render 'projects/blob/viewer', viewer: @snippet.blob.simple_viewer, load_async: false, external_embed: true
diff --git a/app/views/shared/snippets/_header.html.haml b/app/views/shared/snippets/_header.html.haml
index 52fe3be92fe..c75cc8d32f0 100644
--- a/app/views/shared/snippets/_header.html.haml
+++ b/app/views/shared/snippets/_header.html.haml
@@ -19,11 +19,32 @@
   %h2.snippet-title.prepend-top-0.append-bottom-0
     = markdown_field(@snippet, :title)
 
-  - if @snippet.updated_at != @snippet.created_at
-    = edited_time_ago_with_tooltip(@snippet, placement: 'bottom', html_class: 'snippet-edited-ago', exclude_author: true)
   - if @snippet.description.present?
     .description
       .wiki
         = markdown_field(@snippet, :description)
       %textarea.hidden.js-task-list-field
         = @snippet.description
+
+  - if @snippet.updated_at != @snippet.created_at
+    = edited_time_ago_with_tooltip(@snippet, placement: 'bottom', html_class: 'snippet-edited-ago', exclude_author: true)
+
+  - if public_snippet?
+    .embed-snippet
+      .input-group
+        .input-group-btn
+          %button.btn.embed-toggle{ 'data-toggle': 'dropdown', type: 'button' }
+            %span.js-embed-action= _("Embed")
+            = sprite_icon('angle-down', size: 12)
+          %ul.dropdown-menu.dropdown-menu-selectable.embed-toggle-list
+            %li
+              %button.js-embed-btn.btn.btn-transparent.is-active{ type: 'button' }
+                %strong.embed-toggle-list-item= _("Embed")
+            %li
+              %button.js-share-btn.btn.btn-transparent{ type: 'button' }
+                %strong.embed-toggle-list-item= _("Share")
+        %input.js-snippet-url-area.snippet-embed-input.form-control{ type: "text", autocomplete: 'off', value: snippet_embed }
+        .input-group-btn
+          %button.js-clipboard-btn.btn.btn-default.has-tooltip{ title: "Copy to clipboard", 'data-clipboard-target': '#snippet-url-area' }
+            = sprite_icon('duplicate', size: 16)
+    .clearfix
diff --git a/app/views/shared/snippets/show.js.haml b/app/views/shared/snippets/show.js.haml
new file mode 100644
index 00000000000..a9af732bbb5
--- /dev/null
+++ b/app/views/shared/snippets/show.js.haml
@@ -0,0 +1,2 @@
+document.write('#{escape_javascript(stylesheet_link_tag "#{stylesheet_url 'snippets'}")}');
+document.write('#{escape_javascript(render 'shared/snippets/embed')}');