Adding links to user & build stage in a Build message

Closes #26500

See merge request !8641

Prefer service object over after_save hook

Closes #26921

See merge request !8664

Add API endpoint to get all milestone merge requests

Closes #22018

See merge request !9298

Allow slashes in slash command arguments

Closes #28329

See merge request !9327

Only yield valid references in ReferenceFilter.references_in

Closes #27648

See merge request !9318

Resolve "Update global sidebar to dropdown"

Closes #26200

See merge request !9199

Merge branch '26824-diff-unfold-link-is-still-visible-when-there-are-no-lines-to-unfold' into 'master'

Resolve "Diff unfold link is still visible when there are no lines to unfold"

Closes #26824 and #28127

See merge request !8761

Merge branch '27883-autocomplete-seems-to-not-trigger-when-at-character-is-part-of-an-autocompleted-text' into 'master'

Trigger at.js after selecting slash commands with autocomplete suffix

Closes #27883

See merge request !9117

Fix project link on issue creation

See merge request !9226

Signed-off-by: Rémy Coutable <remy@rymai.me>

Don't compress development assets and fix deprecation warning in production

See merge request !9322

Use `page` query parameter instead of `p` to keep consistency with all URLs

Closes #28248

See merge request !9268

Restore pagination to admin abuse reports

Closes #28059

See merge request !9233

stub pagination in tests

Fix 8.17 upgrade documentation

Closes #28021

See merge request !9285

Speed up project_tree_restorer_spec

Closes #28235

See merge request !9266

Disables add issue button

Closes #27931

See merge request !9100

* master:
  Renders pagination again for pipelines table
  Simplify Pages admin source docs
  Simplify Pages admin Omnibus docs
  Seed abuse reports
  Add active_when helper

Renders pagination again for pipelines table

Closes #28299

See merge request !9315

Simplify GitLab Pages admin docs

See merge request !9303

Add active_when helper

Closes #24036

See merge request !9166

Seed abuse reports

See merge request !9234

* master: (65 commits)
  Add CHANGELOG file
  Fix positioning of top scroll button
  add space between ci text and commit sha in Merge Request widget
  Do not use single quote in headings as it breaks docs.gitlab.com
  Fix broken test
  Update services templates docs
  Fix error in MR widget after /merge slash command
  Remove arrow icon from folders
  Create util to handle pagination transformation
  Wrap long Project and Group titles
  Changes after review
  Changes after review
  Rename storePagination to setPagination
  Transforms startTimeAgoLoops into a static method so we can reuse it instead of have 2
  Only run timeago loops after rendering timeago components
  fix tmpdir
  Fix broken tests
  Show merge errors in merge request widget
  Move babel config for instanbul to karma config (!9286)
  Clarify that stage is needed to stop environments
  ...

Resolve "Horizontal scrolling issue on long project names"

Closes #28262

See merge request !9301

Move babel config for instanbul to karma config

See merge request !9286

Only run timeago loops after rendering timeago components

Closes #28247

See merge request !9267