[master] Confidential issue/private snippet titles can be read by unauthenticated user through GFM markdown API

Closes #2706

See merge request gitlab/gitlabhq!2507

Merge branch '50359-activerecord-statementinvalid-pg-querycanceled-error-canceling-statement-due-to-statement-timeout' into 'master'

Resolve "ActiveRecord::StatementInvalid: PG::QueryCanceled: ERROR:  canceling statement due to statement timeout"

Closes #50359

See merge request gitlab-org/gitlab-ce!21893

[master] Fix leaking private project namespace

Closes #2708

See merge request gitlab/gitlabhq!2529

[security - master] Filter user sensitive data from discussions JSON

See merge request gitlab/gitlabhq!2536

Move related branches to service

Closes #43097

See merge request gitlab-org/gitlab-ce!22094

Add a new project-specific templates API endpoint

See merge request gitlab-org/gitlab-ce!22118

Rails5: fix artifacts controller download spec

See merge request gitlab-org/gitlab-ce!22123

Revert "Merge branch 'deploy-tokens' into 'master'"

Closes #52228

See merge request gitlab-org/gitlab-ce!22149

Delayed jobs

Closes #51352

See merge request gitlab-org/gitlab-ce!21767

Backport changes from gitlab-ee!7538

See merge request gitlab-org/gitlab-ce!22093

Fixed merge request file tree not sticking on Safari

Closes #52277

See merge request gitlab-org/gitlab-ce!22147

Add installation type to backup information file

See merge request gitlab-org/gitlab-ce!22150

CE port Resolve "Promote starting a GitLab.com trial"

See merge request gitlab-org/gitlab-ce!21551

Merge branch '5699-enabling-disabling-features-does-not-propagate-correctly-to-geo-secondaries' into 'master'

Backport a refactor on the Feature.flipper method to CE

See merge request gitlab-org/gitlab-ce!22152

Add new CI predefined variables with version components

Closes #46050

See merge request gitlab-org/gitlab-ce!21853

Add gitlab-templates code owners

See merge request gitlab-org/gitlab-ce!22138

Preload project features in reference parser

Closes #43094

See merge request gitlab-org/gitlab-ce!22008

This reverts commit 3df32ac1, reversing
changes made to dd1295a3.

Make GitLab pages support access control

Closes #33422

See merge request gitlab-org/gitlab-ce!18589

Resolve "Can't sort group issues by popularity when searching"

Closes #50246

See merge request gitlab-org/gitlab-ce!21521

Upgrade gitlab-svgs to 1.31.0

See merge request gitlab-org/gitlab-ce!22139

Adds CI_SERVER_VERSION_MAJOR, CI_SERVER_VERSION_MINOR,
CI_SERVER_VERSION_PATCH to the list of environment variables
passed to CI jobs.

Fix links and Markdown.

See merge request gitlab-org/gitlab-ce!22128

We don't think this is needed any more - see
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/21521, and
https://gitlab.com/gitlab-org/gitlab-ce/issues/52271 for removing the flag.

Pipeline only/except for modified paths

See merge request gitlab-org/gitlab-ce!21981

We simplify the query generated if the user can see all confidential issues in a
project context. This change applies the same simplification to group issue
lists.