Allow Issue and Merge Request sidebar to be toggled from collapsed state

Closes #52532

See merge request gitlab-org/gitlab-ce!22353

Add a new QA::ElementWithPattern cop

Closes #52516

See merge request gitlab-org/gitlab-ce!22298

Allow getting the merge base of multiple revisions

Closes #52573

See merge request gitlab-org/gitlab-ce!22295

Add documentation how to assign a merge request for review

See merge request gitlab-org/gitlab-ce!21327

Signed-off-by: Rémy Coutable <remy@rymai.me>

Remove dependencies on Linguist

Closes #35450

See merge request gitlab-org/gitlab-ce!21008

Refactor Cluster services to enable groups or projects

See merge request gitlab-org/gitlab-ce!22181

Fixes close/reopen quick actions preview for issues and merge_requests

Closes #52669

See merge request gitlab-org/gitlab-ce!22343

Fix code reuse issue in Projects::Clusters::ApplicationController#index

See merge request gitlab-org/gitlab-ce!22182

Merge branch '49417-improve-settings-pages-design-by-prioritizing-content-group-settings' into 'master'

Prioritize group settings, improve panel titles, disable submit without changes

Closes #49417

See merge request gitlab-org/gitlab-ce!21115

Resolve "Personal projects pagination in Profile Overview tab is broken"

Closes #52564

See merge request gitlab-org/gitlab-ce!22321

[ci skip]

Send deployment_status when job starts environment

Closes #52614

See merge request gitlab-org/gitlab-ce!22354

Use Gitaly 0.125.1

See merge request gitlab-org/gitlab-ce!22364

This cop forbids the use of `element :foo, 'pattern'` and
`element :bar, /pattern/` in QA files.
Signed-off-by: Rémy Coutable <remy@rymai.me>

The check was if the job `has_environment` which results into showing
the environment information when the job stops the environment. This
result into having a blank `deployment_status`.

Use `starts_environment?` to be the same as the haml we have in 11.3
https://gitlab.com/gitlab-org/gitlab-ce/blob/30f019dca78bb64bcb8b355a267be006884e6d8f/app/views/projects/jobs/show.html.haml#L28

Docs: fix table on API settings

Closes gitlab-com/gitlab-docs#234

See merge request gitlab-org/gitlab-ce!22083

Update docs maintenance upgrade path examples

See merge request gitlab-org/gitlab-ce!22360

Adjust link to docs development guide

See merge request gitlab-org/gitlab-ce!22288

Improve the contributing documentation

See merge request gitlab-org/gitlab-ce!22291

Close/reopen quick actions preview wasn't shown properly, now the
preview is shown as expected.

Add GitLab QA spec for adding a deploy token

See merge request gitlab-org/gitlab-ce!22207

Backport CE changes for: Resolves "Reviews: Resolving or unresolving discussions with “Add comment now” does not work"

See merge request gitlab-org/gitlab-ce!22303

Improve spec for Gitlab::Ci::Status::Pipeline::Factory

Closes #52280

See merge request gitlab-org/gitlab-ce!22247

Enable some frozen string in lib/gitlab

See merge request gitlab-org/gitlab-ce!22304

Resolve "Show canary / no-canary in the performance bar"

Closes #52421

See merge request gitlab-org/gitlab-ce!22222

Only display merge commit SHA when it exists

Closes #48889

See merge request gitlab-org/gitlab-ce!22022

Update Android.gitlab-ci.yml for current stable SDK

See merge request gitlab-org/gitlab-ce!22336

In [!21565][0] we removed the loadCheck function from the LazyLoader for
images. The function seemed to be obsolete before anyhow, because we
make use of the MutationObserver in order to detect elements added /
removed from the DOM.

[0]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/21565

Docs: Link to DeclarativePolicy framework from development guide

See merge request gitlab-org/gitlab-ce!22348