Merge branch '32447-remove-source-branch-is-displayed-to-mergers-who-cannot-actually-delete-the-source-branch-from-a-forked-project' into 'master'

Disable "Remove source branch" in MR Widget for users who can't remove, and re-add checkbox to MR form

Closes #32447 and #32907

See merge request !11558

More consistent padding of notes, system notes, and note form

See merge request !11720

Don't allow spaces in dependency linker value regex

See merge request !11721

Merge branch '31459-fix-transient-error-caused-by-small-timeout-also-adapt-tests-to-work-locally-correctly' into 'master'

Fix transient CI errors by increasing command execution timeouts from 1s to 30s

Closes #31459

See merge request !11420

Creates CI Header component to use in pipelines and job details pages

See merge request !11726

Enable final newline

See merge request !11723

Consistently display last push event widget

See merge request !11585

Fix counter cache invalidation

Closes #32854 and #32870

See merge request !11736

Postgresql 9.2 is the minimum version from GitLab 9.3, not 9.0

See merge request !11737

Fixed create new label form in issue form not working for sub-group projects

Closes #32906

See merge request !11703

Fix Counter Cache not being disabled for acts-on-taggable

Closes #30582

See merge request !11727

Add API URL to JIRA settings

Closes #31448

See merge request !11707

Fix buffering in DiffCollection

See merge request !11659

Fix error thrown with missing note fragment in DOM

Closes #32888

See merge request !11700

Set emoji-menu z-index to 200

Closes #32632

See merge request !11686

Resolve "Resolved discussions icon is misaligned"

Closes #32683

See merge request !11711

Drop support for postgresql 9.1 in GitLab 9.3

Closes #32851

See merge request !11677

Fixed locale frontend not picking up regions

Closes #32913

See merge request !11717

Remove trigger docs job

See merge request !11574

Return the last coverage in trace stream

Closes #31556

See merge request !11128

Resolve "Audit long-term cacheability of webpack assets"

Closes #32737

See merge request !11622

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/32888

Reproduction:

 1. Visit /namespace/project/merge_requests/x/diffs#note_1234
 1. When `#note_1234` isn't in the diff, an error is thrown

Clean up diff rendering

See merge request !11390