Load repository language from the DB if detected

Closes #47390

See merge request gitlab-org/gitlab-ce!25518

Extract ResolveWithIssueButton from NoteableDiscussion component

Closes #56367

See merge request gitlab-org/gitlab-ce!25093

Merge branch '55925-if-there-is-only-one-changed-page-in-review-app-go-directly-there' into 'master'

If there is one changed page in review app, link to it

Closes #55925

See merge request gitlab-org/gitlab-ce!25048

Port of

See merge request gitlab-org/gitlab-ce!23868

Respect the `should_remove_source_branch` parameter to the merge API

Closes #58020

See merge request gitlab-org/gitlab-ce!25525

Given a static page mapping, and a review app with a single static page
change, the review app link will now go directly to that change instead
of to the home page of the review app.

Compute approved approver for merged MR if it is absent

Closes #9866, #9889, and #9913

See merge request gitlab-org/gitlab-ee!9648

Past merged MRs do not have approved_approvers for now,
so to keep UI display correctly, compute approved approvers if
association is empty.

Recreate fail case as spec to test creation of `approved_approver`
after merge. Use `inverse_of` to ensure same copy of MR object across
`PostMergeService` and `ApprovalMergeRequestRule`. This means we can
avoid reloading `approval_rules` to solve outdate MR merge state issue.

Project template for .NET

Closes #57794

See merge request gitlab-org/gitlab-ce!25486

Merge branch '57794-project-template-for-net' of https://gitlab.com/gitlab-org/gitlab-ce into 57794-project-template-for-net

CE Allow Gitaly N+1 in MR CreationsController

See merge request gitlab-org/gitlab-ce!25499

The repository charts page used to detect the repository language for
each request that was made to the page. Given the detection is an
expensive operation and the same data is stored in the database the
database is now serving the request.

The same goes for an API endpoint that serves the languages.

When a repository is empty or non-existent the languages will always be
empty. And the language detection RPC isn't requested.

Closes: https://gitlab.com/gitlab-org/gitlab-ce/issues/47390

Resolve "Project import error, User expected, got Hash"

Closes #57712

See merge request gitlab-org/gitlab-ce!25495

Resolve "Styling of user, project and group avatars"

Closes #52734

See merge request gitlab-org/gitlab-ce!25098

- Add rectangular avatar classes
- Update avatar for groups
- Update avatar for projects
- Update avatar for frequent items
- Update avatar on "Fork project" page
- Conditionally add rectangular avatar class to autocomplete items

Remove unnecessary difference between CE and EE

Closes #58070

See merge request gitlab-org/gitlab-ce!25513

Delegate last_pipeline to Project

See merge request gitlab-org/gitlab-ce!25422

"Cross-Project Pipeline Dashboard MVC" backend

See merge request gitlab-org/gitlab-ee!9396

Allow maintainers to remove pages

See merge request gitlab-org/gitlab-ce!25458

Move remove_pages permission to maintainer
Fix before_action in pages controller to check `remove_pages`
permission
Add specs

Expose refspec and depth to runner

See merge request gitlab-org/gitlab-ce!25233

Docs: update code review guidelines

Closes #57305

See merge request gitlab-org/gitlab-ce!25460

Refactor note target override for Epics

Closes #9949

See merge request gitlab-org/gitlab-ee!9686

Add ability to set project path and name on fork using API

Closes #40795

See merge request gitlab-org/gitlab-ce!25363

Make Admin::UsersController work with Ruby 2.6

See merge request gitlab-org/gitlab-ce!25316