Add index on group_id column concurrently

See merge request gitlab-org/gitlab-ce!32826

This fixes previously added migration which caused timeouts on
big events table.

Add EE label to repository_storage

See merge request gitlab-org/gitlab-ce!31933

Start linting for unneeded dollar signs

See merge request gitlab-org/gitlab-ce!32803

Do not use dollar signs in shell codeblocks when
no output is shown

[CE] Add event presenter

See merge request gitlab-org/gitlab-ce!32750

This presenter will be used in an upcoming MR which adds
rendering of epic events on group activity page.

Refactor the Dependency Scanning docs

See merge request gitlab-org/gitlab-ce!32582

Notably:

- Merge the use cases with the opening paragraph of DS
- Add link to the auto-remediation section in the main index page
- Add auto remediation to the title of solutions for better SEO
- Move the JSON reports section below the other more important sections
- Remove Container Scanning from the list of supported scanners in
  solutions
- Fix some "introduced in" sentences so that they can be properly parsed

Fix broken link to the handbook

See merge request gitlab-org/gitlab-ce!32849

Only CODEOWNERS on default branch affect MR approvals

See merge request gitlab-org/gitlab-ce!32841

Add user creation documentation

Closes gitlab-com/support/support-team-meta#1681

See merge request gitlab-org/gitlab-ce!32411

Avoid calling freeze on already frozen strings in lib

See merge request gitlab-org/gitlab-ce!32788

Docs: Add when to use Jest section in frontend_testing

See merge request gitlab-org/gitlab-ce!32760

Edits to Lists section of Documentation Style Guide

See merge request gitlab-org/gitlab-ce!32782

This references an issue that is closed

See merge request gitlab-org/gitlab-ce!29274

Provide urls for Merge Requests and Issue links

See merge request gitlab-org/gitlab-ce!32401

Cosmetic fix in doc/user/markdown.md where the word 'itself' is repeated.

See merge request gitlab-org/gitlab-ce!32818

Document CI_RUNNER_SHORT_TOKEN variable

See merge request gitlab-org/gitlab-ce!32824

Variable was added in GitLab Runner with:
https://gitlab.com/gitlab-org/gitlab-runner/merge_requests/1571

docs: add full omnibus example for smime signing

See merge request gitlab-org/gitlab-ce!32146

- minor style corrections
- document rsa keys limitation

Update merge_request_approvals.md - typo

See merge request gitlab-org/gitlab-ce!32838

Fix typo in repository storage types doc

See merge request gitlab-org/gitlab-ce!32858

Revert gitlab-backup command and add a note for it

Closes #65889

See merge request gitlab-org/gitlab-ce!31747

Expose :protected field for ../tags/:tag_name API endpoint

See merge request gitlab-org/gitlab-ce!32790

Realign dependency scanning doc from EE to CE

See merge request gitlab-org/gitlab-ce!32851

Docs: Corrected CI to CD in introduction

Closes #66005

See merge request gitlab-org/gitlab-ce!32787

documentation grammar fix "this" -> "these" in vuex.md

See merge request gitlab-org/gitlab-ce!32847