* master: (313 commits)
  Allow slashes in slash command arguments
  Add API endpoint to get all milestone merge requests
  remove trailing comma
  Restore pagination to admin abuse reports
  replace deprecated NoErrorsPlugin with NoEmitOnErrorsPlugin
  only compress assets in production
  Reduce number of pipelines created to test pagination
  add CHANGELOG.md entry for !8761
  prevent diff unfolding link from appearing for deleted files
  fix build failures
  only show diff unfolding link if there are more lines to show
  fix typo in node section
  Only yield valid references in ReferenceFilter.references_in
  Cache js selectors; fix css
  move "Install node modules" step before "Migrate DB" within update process
  Renders pagination again for pipelines table
  update migration docs for 8.17 to include minimum node version
  Add CHANGELOG file
  Fix positioning of top scroll button
  Remove comments in migration
  ...

Remove legacy GitlabCi module from initializers

See merge request !9279

Fix pipeline retry and cancel buttons on pipeline details page

See merge request !9225

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