Resolve "Performance issues when loading large number of wiki pages"

Closes #34600

See merge request gitlab-org/gitlab-ce!15276

Exports a couple of project related code as es6 modules

See merge request gitlab-org/gitlab-ce!15356

Convert migration to populate latest merge request ID into a background migration

See merge request gitlab-org/gitlab-ce!15440

Add dropdowns documentation

See merge request gitlab-org/gitlab-ce!15396

This is to smear updates over a few hours to avoid causing excessive
replication lag as seen in https://gitlab.com/gitlab-com/infrastructure/issues/3235.

Update database_debugging.md

See merge request gitlab-org/gitlab-ce!15434

Replace ci_status_path with pipeline_path

See merge request gitlab-org/gitlab-ce!15369

De-duplicate background migration matchers defined in spec/support/migrations_helpers.rb

See merge request gitlab-org/gitlab-ce!15441

Update HA README.md to clarify GitLab support does not troubleshoot DRBD.

See merge request gitlab-org/gitlab-ce!15428

Set 0.69.0 instead of latest for codeclimate image

See merge request gitlab-org/gitlab-ce!15445

Refactor  Cluster docs

Closes #39952

See merge request gitlab-org/gitlab-ce!15418

Resolve "lock/confidential issuable sidebar custom svg icons iteration"

Closes #37508

See merge request gitlab-org/gitlab-ce!15372

Isolate the fork network background migrations

See merge request gitlab-org/gitlab-ce!15393

Cache the number of user SSH keys

See merge request gitlab-org/gitlab-ce!15401

When a custom header logo is present, don't show GitLab type logo

See merge request gitlab-org/gitlab-ce!15410

Make sure NotesActions#noteable returns a Noteable in the update action

Closes #40208

See merge request gitlab-org/gitlab-ce!15421

Update license_finder to 3.1.1

Closes #34955 et #40020

See merge request gitlab-org/gitlab-ce!15319

By caching the number of personal SSH keys we reduce the number of
queries necessary on pages such as ProjectsController#show (which can
end up querying this data multiple times).

The cache is refreshed/flushed whenever an SSH key is added, removed, or
when a user is removed.

Adjust openid_connect_spec to use `raise_error`

Closes #40093

See merge request gitlab-org/gitlab-ce!15420

Backport delete epic changes

Closes #40162

See merge request gitlab-org/gitlab-ce!15414

Change logic of repo name and slugs in docs review script

See merge request gitlab-org/gitlab-ce!15395

Use relative git object paths to construct absolute ones before setting Env

See merge request gitlab-org/gitlab-ce!15376

Using the `raise_error`-matcher instead of `throw_symbol` makes sure
our after blocks get called in the test suite.

Add basic docs for troubleshooting database problems

See merge request gitlab-org/gitlab-ce!15416