Add latest changes from gitlab-org/gitlab@master

changelogs/unreleased/28781-migrate-pages-metadata-in-background.yml

+---
+title: Schedule background migration to populate pages metadata
+merge_request: 17993
+author:
+type: added

changelogs/unreleased/28781-migrate-pages-metadata-on-demand.yml

+---
+title: Add index on ci_builds for successful Pages deploys
+merge_request: 17204
+author:
+type: added

changelogs/unreleased/28781-pages-namespaces-virtual-domain.yml

+---
+title: Add project_pages_metadata DB table
+merge_request: 17197
+author:
+type: added

changelogs/unreleased/29020-merge-requests-issues-links.yml

+---
+title: Provide Merge requests and Issue links through the Release API
+merge_request: 18311
+author:
+type: added

changelogs/unreleased/29020-update-release-blocks-for-multiple-milestone-support.yml

+---
+title: Add support for the association of multiple milestones to the Releases page
+merge_request: 17091
+author:
+type: changed

changelogs/unreleased/29215-500-error-when-deleting-group-web-hook-activerecord-statementinvali.yml

+---
+title: Use cascading deletes for deleting logs upon deleting a webhook
+merge_request: 18642
+author:
+type: performance

changelogs/unreleased/29284-video-preview-not-working.yml

+---
+title: Fix inline rendering of videos for uploads with uppercase file extensions
+merge_request: 17924
+author:
+type: fixed

changelogs/unreleased/29477-notification-settings-display-all-groups.yml

+---
+title: Show all groups user belongs to in Notification settings
+merge_request: 17303
+author:
+type: fixed

changelogs/unreleased/29513-continue-improvements-for-time-window-filtering-on-metrics-dashboar.yml

+---
+title: Improve time window filtering on metrics dashboard
+merge_request: 17554
+author:
+type: added

changelogs/unreleased/29835-webide-fork.yml

+---
+title: Web IDE button should fork and open forked project when selected from read-only
+  project
+merge_request: 17672
+author:
+type: added

changelogs/unreleased/29881-fix-ide-delete-and-readd.yml

+---
+title: Fix Web IDE tree not updating modified status
+merge_request: 18647
+author:
+type: fixed

changelogs/unreleased/30112-private-internal-sub-group-email-notifications-not-sent-when-mentio.yml

+---
+title: Fix notifications for private group mentions in Notes, Issues, and Merge Requests
+merge_request: 18183
+author:
+type: fixed

changelogs/unreleased/30186-mirror-pull-api-no-unpause.yml

+---
+title: Do not start mirroring via API when paused
+merge_request: 17930
+author:
+type: changed

changelogs/unreleased/30217-refactor-email-notification-code.yml

+---
+title: Refactor email notification code
+merge_request: 17741
+author: briankabiro
+type: other

changelogs/unreleased/30392-variables.yml

+---
+title: Fixes variables overflowing in sm screens
+merge_request:
+author:
+type: fixed

changelogs/unreleased/30497-race-condition-in-discussions-json-request-could-lead-to-notes-show.yml

+---
+title: Fix notes race condition when linking to specific note
+merge_request: 17777
+author:
+type: fixed

changelogs/unreleased/30525-iframe_jaeger.yml

+---
+title: Embed Jaeger in Gitlab UI
+merge_request:
+author:
+type: changed

changelogs/unreleased/30619-make-recent-searches-more-visible.yml

+---
+title: Use text instead of icon for recent searches dropdown
+merge_request:
+author:
+type: changed

changelogs/unreleased/30807-fix-usability-problem.yml

+---
+title: Fix usability problems with the file template picker
+merge_request: 17522
+author:
+type: changed

changelogs/unreleased/30839-asciidoc-table-styles.yml

+---
+title: Enable grid, frame and stripes styling on AsciiDoc tables
+merge_request: 18165
+author: Guillaume Grossetie
+type: fixed