Merge remote-tracking branch 'origin/master' into 34366-issue-sidebar-don-t-render-participants-in-collapsed-state

Only trigger loadCheck on open toggle, not close. Update specs and add right_sidebar_spec test for additions

Clarify artifact download via the API only accepts branch or tag name for ref

See merge request gitlab-org/gitlab-ce!14545

Fixed missing namespaces on navigation translations

See merge request gitlab-org/gitlab-ce!14472

Lazy load images in mobile sidebar & header

Closes #38276

See merge request gitlab-org/gitlab-ce!14526

Fixes commit comments in parallel diff view

Closes #38117

See merge request gitlab-org/gitlab-ce!14529

RepositoryExists is always called with #gitaly_migration

Closes #38333

See merge request gitlab-org/gitlab-ce!14513

Refactor services to match EE signature

See merge request gitlab-org/gitlab-ce!14385

Clean merge_jid whenever necessary on the merge process

Closes #38476

See merge request gitlab-org/gitlab-ce!14540

Check orientation of profile image

See merge request gitlab-org/gitlab-ce!14461

Change recommended MySQL version to 5.6

Closes #38152

See merge request gitlab-org/gitlab-ce!14546

Cleanup diff-notes-collapse css

See merge request gitlab-org/gitlab-ce!14515

MergeRequest#merge_jid should be cleaned up whenever we hit a known error on MergeService#execute. This way we can keep track if the MR is really "ongoing" or "stuck"

Rolling back change to n+1 detection

See merge request gitlab-org/gitlab-ce!14536

Add things that the k8s integration enables

Closes #37529

See merge request gitlab-org/gitlab-ce!14163

Fix linting errors in locale/index.js

See merge request gitlab-org/gitlab-ce!14521

RepoEditor: Implement line and range linking.

Closes #38254

See merge request gitlab-org/gitlab-ce!14448