Resolve "Pipeline job log page uses too much CPU for loading animation"

Closes #49776

See merge request gitlab-org/gitlab-ce!20915

Enable frozen string for app/models/**/*.rb

See merge request gitlab-org/gitlab-ce!21001

Frontend code for "JUnit XML Test Summary In MR widget"

See merge request gitlab-org/gitlab-ce!20936

Fix spec warnings and template helper

See merge request gitlab-org/gitlab-ce!21007

Improve blocked user tracking and fire some events only once

Closes #49784

See merge request gitlab-org/gitlab-ce!20959

Resolve "Merge request e-mail link has full URL"

Closes #49899

See merge request gitlab-org/gitlab-ce!21000

Update query simplification

Closes #49873

See merge request gitlab-org/gitlab-ce!20982

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

Resolve "Unicorn development settings should match production as much as possible"

Closes #49756

See merge request gitlab-org/gitlab-ce!20919

Enable renaming files & folders in the Web IDE

Closes #44845

See merge request gitlab-org/gitlab-ce!20835

Removed obsolete note about manual uploads migration

Closes #49239

See merge request gitlab-org/gitlab-ce!21002

Set default timeout for deleting many refs

Closes #49862

See merge request gitlab-org/gitlab-ce!20974

Partially addresses #47424.

We already support automatic background migrations,
`background_upload` option which enables it is already documented.

Remove unused styles in tree.scss

See merge request gitlab-org/gitlab-ce!20996

Add object storage related tests for `gitlab:cleanup:project_uploads` task

See merge request gitlab-org/gitlab-ce!20950

Rouge 3.2.0

See merge request gitlab-org/gitlab-ce!20991

Make CreateGpgSignatureWorker backwards compatible with original method signature (CE port)

See merge request gitlab-org/gitlab-ce!20998

Older versions of GitPushService push a single commit SHA string to the queue,
but Gitaly requires that the parameters sent by CreateGpgSignatureWorker are
an array. It's possible to have old workers using this original signature or
jobs in the retry queue that would fail if CreateGpgSignatureWorker can't
handle the string form.

Fix failing 500 errors when deploy tokens are used to clone

Closes gitlab-ee#7080

See merge request gitlab-org/gitlab-ce!20993

Fix deploy tokens without `expire_at` crashes

Closes #49904

See merge request gitlab-org/gitlab-ce!20992

A DeployToken responds to `:username`, but it returns the username for the
token, not a User object. Don't attempt to log user activity in this case.

Closes gitlab-org/gitlab-ee#7080

Get rid of unnecessary commit action in pipelines controller

See merge request gitlab-org/gitlab-ce!20980

- Cleans up CSS to use common classes
- Removes getters to use mapState instead
- Makes the first request even when tab is not visible
- Show loading state in 204

Creates an app to render grouped test reports in the MR widget
Ports CSS from EE into CE
Creates a reusable code component
Adds getters and utils to the existing reports store