We were looking these up on each request to an issue page, because the form is
pre-filled, as is the template dropdown. That was unnecessary: we could just
treat these as 'special' repository files (like the rendered README) and cache
them in Redis until they change on a push.

The basename appears to have been a holdover from the past - it doesn't look
necessary now. Some of the regexes were unanchored on one side, so explicitly
ensure that they only match the root.

Apart from that, this means that pushing to foo/README.md will no longer
invalidate the main README cache for a project.

Add support for markdown preview to group milestones

Closes #30241

See merge request gitlab-org/gitlab-ce!14806

fix the import :milestone from adding the group_id

Closes #35580

See merge request gitlab-org/gitlab-ce!14657

Use Gitaly's RepositoryService.HasLocalBranches RPC

See merge request gitlab-org/gitlab-ce!14753

Add sort runners on admin runners

Closes #38720

See merge request gitlab-org/gitlab-ce!14661

Move callback route(`google_api/auth/callback`) for Oauth under `-`

Closes #38911

See merge request gitlab-org/gitlab-ce!14802

Simplify project page

Closes #37399 and #38839

See merge request gitlab-org/gitlab-ce!14669

Developer can create/edit/delete milestones

See merge request gitlab-org/gitlab-ce!14797

QA group name, use hyphens rather than underscores

See merge request gitlab-org/gitlab-ce!14786

Enable eslint in star and remove from main.js

See merge request gitlab-org/gitlab-ce!14795

Use ES6 modules in labels and labels manager

See merge request gitlab-org/gitlab-ce!14794

Add image discussion docs

Closes #38879

See merge request gitlab-org/gitlab-ce!14743

Refactor the Development documentation, and divide the Testing documentation into multiple pages

See merge request gitlab-org/gitlab-ce!14512

Update Kubernetes Helm chart docs

Closes #38828

See merge request gitlab-org/gitlab-ce!14717

Add explicit test to test resolved discussion toggle content

See merge request gitlab-org/gitlab-ce!14796

Decreases z-index of select2 to a lower number than our navigation bar

Closes #36160

See merge request gitlab-org/gitlab-ce!14768

Remove not selector increasing specificity of rules

Closes #38958

See merge request gitlab-org/gitlab-ce!14789

Locked issues / mrs docs

Closes #38880

See merge request gitlab-org/gitlab-ce!14770

Fix unable to expand text diff discussion comments

Closes #38940

See merge request gitlab-org/gitlab-ce!14792

Use Gitaly 0.45.1 and gitaly-proto 0.41.0

See merge request gitlab-org/gitlab-ce!14787

Stop using `branch_names.include?` and use `branch_exists?`

See merge request gitlab-org/gitlab-ce!14778

Remove u2f from global namespace

See merge request gitlab-org/gitlab-ce!14776