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

Breadcrumbs receives padding when double lined

See merge request gitlab-org/gitlab-ce!14298

Added some Gitaly docs to `docs/development`

[ci skip]

See merge request gitlab-org/gitlab-ce!14473

Refactor a service responsible for creating a pipeline

Closes #37563 and #34415

See merge request gitlab-org/gitlab-ce!14482

This was caused by the `notes` global class not existing when the
`file_comment_button` code is run. The notes class was used to check
if the diff is currently in parallel view or not. To get around this
I've added a check into the `file_comment_button` JS to check if the
view is currently parallel or not.

Closes #38117

Removes section about big MRs

See merge request gitlab-org/gitlab-ce!14520

Improves i18n for Auto Devops callout

Closes #38406

See merge request gitlab-org/gitlab-ce!14509

Update CI parallelization description

See merge request gitlab-org/gitlab-ce!14503

Closes #38276

Clarify k8s project namespace

Closes #35366

See merge request gitlab-org/gitlab-ce!14139

[ci skip]

Fix component update with branch specifiers on CI

Closes #38378

See merge request gitlab-org/gitlab-ce!14494