Move git operations for multi_action into Gitlab::Git

Closes gitaly#872

See merge request gitlab-org/gitlab-ce!16215

Prevent cluster migration spec from interfering with later specs

See merge request gitlab-org/gitlab-ce!16255

Port of EE translations

See merge request gitlab-org/gitlab-ce!16254

Improve filtering issues by label performance

Closes #40500 and #37143

See merge request gitlab-org/gitlab-ce!16136

If a later spec tries to set a field that is added to any of these models by a
later migration than the GCP clusters migration, it will fail because the
model's columns are cached.

We should always refer to models in migration specs by either their class in the
migration, or the table directly, using the `table` helper.

Resolve "Helpful and instructing Empty state for multi file editor"

Closes #41048 and #41641

See merge request gitlab-org/gitlab-ce!16224

Copy Mermaid graphs as GFM

Closes #41211

See merge request gitlab-org/gitlab-ce!16046

New Crowdin translations

See merge request gitlab-org/gitlab-ee!3930

Use --left-right and --max-count for counting diverging commits

Closes #40622 et #37843

See merge request gitlab-org/gitlab-ce!15963

CE Backport of reordering issues in epics

See merge request gitlab-org/gitlab-ce!16247

Fix custom name in branch creation for issue in Firefox

Closes #41563

See merge request gitlab-org/gitlab-ce!16244

API: get participants from merge_requests & issues

Closes #40986

See merge request gitlab-org/gitlab-ce!16187

Resolve "Create secrets failed for Auto DevOps with latest stable of kubectl"

Closes #41376

See merge request gitlab-org/gitlab-ce!16218

Backport 'Rebase' feature from EE to CE

Closes #40301

See merge request gitlab-org/gitlab-ce!16071

Remove the Project#repo method

See merge request gitlab-org/gitlab-ce!16238

Add docs about end-to-end testing / GitLab QA tests

Closes #39637

See merge request gitlab-org/gitlab-ce!16043

Expose project_id on /api/v4/pages/domains

See merge request gitlab-org/gitlab-ce!16200

Don't use Gitlab::Shell#import_repository on local paths

See merge request gitlab-org/gitlab-ce!16228

[EE-backport] Add group boards API endpoint

See merge request gitlab-org/gitlab-ce!16194

Backport of methods and components added in EE

See merge request gitlab-org/gitlab-ce!16208

Update redis-rack to 2.0.4

See merge request gitlab-org/gitlab-ce!16251

Update settings.md

See merge request gitlab-org/gitlab-ce!16233

Merge branch 'master' of gitlab.com:gitlab-org/gitlab-ce into 41563-fix-branch-creation-from-issue-in-firefox

Fix import project url not updating project name

Closes #40607

See merge request gitlab-org/gitlab-ce!16120

Add id to modal.vue to support data-toggle="modal"

Closes #41584

See merge request gitlab-org/gitlab-ce!16189

Up until version 2.0.3 redis-rack included a "rake" binary that would
overwrite/hijack the one provided by Rake itself. Unfortunately the
binary provided by redis-rack would produce errors in many cases. See
https://github.com/redis-store/redis-rack/pull/34 for more info.

Refactor cluster show page

Closes #41335

See merge request gitlab-org/gitlab-ce!16089

Allow local tests to use a modified Gitaly

Closes gitaly#833

See merge request gitlab-org/gitlab-ce!16220