Resolve "!15665 consistently 502s because it fetches every commit"

Closes #41807

See merge request gitlab-org/gitlab-ce!16320

Docs: move article "Autoscaling Runners on AWS" to its topic-related dir

See merge request gitlab-org/gitlab-ce!16368

Fixed performance of projects dropdown

Closes #41939

See merge request gitlab-org/gitlab-ce!16425

Use simple Next/Prev paging for CI Jobs page

Closes #41058

See merge request gitlab-org/gitlab-ce!16392

Update missing API documentation on `GET /users/:id/projects`

Closes #41478

See merge request gitlab-org/gitlab-ce!16363

Docs: remove duplicate CI examples

Closes #41872

See merge request gitlab-org/gitlab-ce!16372

If we search for notes before the MR was merged, we have to load every commit
that was ever part of the MR, or mentioned in a push. In extreme cases, this can
be tens of thousands of commits to load, but we know they can't revert the merge
commit, because they are from before the MR was merged.

In the (rare) case that we don't have a `merged_at` value for the MR, we can
still search all notes.

Added .rej files to gitignore

See merge request gitlab-org/gitlab-ce!16429

Resolve "Fix type is started key"

Closes #41937

See merge request gitlab-org/gitlab-ce!16407

[ci skip]

Resolve "Wording fixes on cluster page"

Closes #41797

See merge request gitlab-org/gitlab-ce!16324

Closes #41939

Update the grpc gem to 1.8.3

See merge request gitlab-org/gitlab-ce!16354

Add a note about GitLab QA page objects validator to docs

See merge request gitlab-org/gitlab-ce!16424

Fix Ctrl+Enter keyboard shortcut saving comment/note edit

Closes #41956

See merge request gitlab-org/gitlab-ce!16415

Refactor dispatcher project branches path

See merge request gitlab-org/gitlab-ce!16398

Refactor dispatcher projects blame and blob path

See merge request gitlab-org/gitlab-ce!16369

Update export message to mention we can download the file from the UI

See merge request gitlab-org/gitlab-ce!16419

Resolve "Attachments in e-mail notifications are using the wrong URL"

Closes #41882

See merge request gitlab-org/gitlab-ce!16364

Fix Route validation when conflicting permanent redirects exist

Closes gitlab-com/support-forum#2883 and #41786

See merge request gitlab-org/gitlab-ce!16397

Resolve "Subscribe button tooltip on issues page causes visual stuttering"

Closes #37077

See merge request gitlab-org/gitlab-ce!16411

Add reason to keep postgresql 9.2 for CI

See merge request gitlab-org/gitlab-ce!16277

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/41956

Migrate rebase_in_progress? to Gitaly

Closes gitaly#866

See merge request gitlab-org/gitlab-ce!16286

Migrate Gitlab::Git::Repository#rebase to Gitaly

Closes gitaly#863

See merge request gitlab-org/gitlab-ce!16259

Remove warning noise in ProjectImportOptions

See merge request gitlab-org/gitlab-ce!16410

Refactor dispatcher dashboard mr path

See merge request gitlab-org/gitlab-ce!16360

Squlches these warnings:

```
/opt/gitlab/embedded/service/gitlab-rails/app/workers/concerns/project_import_options.rb:5: warning: already initialized constant ProjectImportOptions::IMPORT_RETRY_COUNT
/opt/gitlab/embedded/service/gitlab-rails/app/workers/concerns/project_import_options.rb:5: warning: previous definition of IMPORT_RETRY_COUNT was here
```

Refactor dispatcher project boards path

See merge request gitlab-org/gitlab-ce!16374

Improve wording about additional costs with Ingress on GKE or custom clusters

Closes #41163

See merge request gitlab-org/gitlab-ce!16370