Backports changes made to One notification per code review

See merge request gitlab-org/gitlab-ce!23656

Resolve "Further improvements to Project overview UI"

Closes #51243

See merge request gitlab-org/gitlab-ce!22196

CE Port of "Web Terminal FE"

See merge request gitlab-org/gitlab-ce!23626

Remove RemoveOldWebHookLogsWorker

Closes #52592

See merge request gitlab-org/gitlab-ce!23628

Log and pass correlation-id between Unicorn, Sidekiq and Gitaly

See merge request gitlab-org/gitlab-ce!22844

Update merge request's merge_commit after branch update

Closes #48889

See merge request gitlab-org/gitlab-ce!22794

Improve error message when attempting to reopen MR and there's a new open MR for the same branch

Closes #22548

See merge request gitlab-org/gitlab-ce!22326

Backports some changes from gitlab-ee!7885

See merge request gitlab-org/gitlab-ce!23637

Fix transaction pollution in Shard.by_name

See merge request gitlab-org/gitlab-ce!23655

The EE merge request can be found here:
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8442

Documentation for "`only/except: merge-requests` for merge request pipelines"

Closes #54511 and #15310

See merge request gitlab-org/gitlab-ce!23397

Continues the iteration on the project overview UI:

- moved star, fork and new clone button
(copy SSH/HTTPS URLs) to top right,
  made them smaller
- avatar is now larger (64px)
- 'Request access' is now a link instead
  of a button
- overview comes before the description +
  changed styling and added icons
- description font-size is now 16px (large-paragraph)
- quick links to files are moved downwards
  below the commit/pipeline info
- margins changed to group content into
  4 groups to clean up the interface
- visibility info reduced to icon-only and
  moved to the right of the title

Show primary button when all labels are prioritized

Closes #54467

See merge request gitlab-org/gitlab-ce!23648

[Documentation] Fix minor issues in search API doc

Closes #54959

See merge request gitlab-org/gitlab-ce!23645

If a commit has two parents, one is direct ancestor, and one is not,
and the order of `commits` is in such fashion that the non-ancestor
side is visited first, the commit would be determined as non-ancestor,
when in fact it can be.

Therefore we should first determine all direct ancestors
prior to analyzing.

Remove Sidekiq::Testing in RepositoryController spec

See merge request gitlab-org/gitlab-ce!23653

CE Backport: Fix labels tooltip in collapsed Epics sidebar

See merge request gitlab-org/gitlab-ce!23647

Fix duplicate boardsStore variable in milestone select

Closes #54139

See merge request gitlab-org/gitlab-ce!23625

Update docs' Dangerfile

See merge request gitlab-org/gitlab-ce!23620

Use FastDestroy for deleting uploads

Closes #46069

See merge request gitlab-org/gitlab-ce!20977

Add CI/CD build encrypted tokens (after revert)

Closes #52342

See merge request gitlab-org/gitlab-ce!23649

Analyze new commits graph to determine each commit's merge commit.

Fix "merged with [commit]" info for merge requests being merged
automatically by other actions.

Allow analyzing upto the relevant commit

Fixed misreported error codes and elaborated

See merge request gitlab-org/gitlab-ce!23642

Add a flag to use a subquery for group issues search

See merge request gitlab-org/gitlab-ce!23445

Document `/help` tests

See merge request gitlab-org/gitlab-ce!23469