Docs: CI Get Started redo

See merge request gitlab-org/gitlab!47715

Add merge trains checkbox selector and update tests

See merge request gitlab-org/gitlab!47971

Update dependency @sourcegraph/code-host-integration to v0.0.52

See merge request gitlab-org/gitlab!46136

Fixes diff metadata StartupJS URL not matching

See merge request gitlab-org/gitlab!47265

Add GraphQL removed items page

See merge request gitlab-org/gitlab!45377

Fix incorrect hiding of inline comment cells

See merge request gitlab-org/gitlab!47693

Add tests for parallel and inline comment cell rendering

GraphQL: Remove old deprecated fields from docs and API

See merge request gitlab-org/gitlab!44866

Fix Ruby 2.7 deprecation warnings in spec/requests/git_http_spec.rb

See merge request gitlab-org/gitlab!47892

Update Gitaly version

See merge request gitlab-org/gitlab!47977

Update deploytoken user impersonation guidelines

See merge request gitlab-org/gitlab!46924

Docs: Commented out modal install window details (1 of 2)

See merge request gitlab-org/gitlab!47975

Add count of projects with new incidents to usage ping

See merge request gitlab-org/gitlab!46602

Update iteration burncharts docs

See merge request gitlab-org/gitlab!47908

Correct version with GitOps from directories support

See merge request gitlab-org/gitlab!47973

Update rack-oauth2 to v1.16.0

See merge request gitlab-org/gitlab!47839

Update utilize rule to warning level suggestion

See merge request gitlab-org/gitlab!47873

Also, fix all examples of utilize in the docs

Add liveness readiness check troubleshooting steps

See merge request gitlab-org/gitlab!47960

Merge branch 'calebw-master-patch-55976' of gitlab.com:gitlab-org/gitlab into calebw-master-patch-55976

Fix Kramdown warnings in iterations list

See merge request gitlab-org/gitlab!47968

Fix Markdown and styling issues to bring the work closer to GitLab
tone and style.

The iterations list on this page contained invalid Markdown, which
this merge request cleans out.

Use li instead of div in feature flag tab buttons

See merge request gitlab-org/gitlab!47936

docs: Fix typo in SAST post-process docs

See merge request gitlab-org/gitlab!47947

Add codequality_mr_diff feature flag

See merge request gitlab-org/gitlab!47938

Add a service for token revocation

See merge request gitlab-org/gitlab!46356

Fix kwargs deprecation warnings in create composer package service

See merge request gitlab-org/gitlab!47788

Merge branch '284181-fix-saving-jira-configuration-when-is-not-configured-for-project' into 'master'

Fix saving Jira Configuration for Group

See merge request gitlab-org/gitlab!47944

Merge branch '250353-convert-issues-createfromvulnerabilityservice-to-work-similar-to-issues-buildservice-2' into 'master'

Create Issues::BuildFromVulnerabilityService based off of Issues::BuildService

See merge request gitlab-org/gitlab!47510