Fix 404s when C++ .gitignore template selected

Closes #57857

See merge request gitlab-org/gitlab-ce!25416

Update GitLab Runner Helm Chart to 0.2.0

See merge request gitlab-org/gitlab-ce!25493

Port design-management-vue-app to CE

See merge request gitlab-org/gitlab-ce!25494

Remove duplicate XHR request when requesting new pipeline page

Closes #58095

See merge request gitlab-org/gitlab-ce!25506

Project Templates for Netlify

Closes #57785

See merge request gitlab-org/gitlab-ce!25453

Merge branch '57785-create-project-template-for-netlify' of https://gitlab.com/gitlab-org/gitlab-ce into 57785-create-project-template-for-netlify

Properly handle multiple X-Forwarded-For addresses in runner IP

Closes #58103

See merge request gitlab-org/gitlab-ce!25511

docs: Fix misspellings in docs

See merge request gitlab-org/gitlab-ce!25505

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

Remove convertPermissionToBoolean() from common_utils.js

See merge request gitlab-org/gitlab-ce!25454

Docs: fix url of pipeline status badge

See merge request gitlab-org/gitlab-ce!25404

Update minimum ruby version to 2.5.

See merge request gitlab-org/gitlab-ce!25496

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24624 extracted
the X-Forwarded-For address directly, but this didn't consider the case
where multiple proxies are in the chain. To fix this, we use the Rails
implementation to filter trusted proxies, as documented by Grape:
https://github.com/ruby-grape/grape#remote-ip

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/58103

When a user clicked on another page in the pipeline page, the following
would happen:

1. PipelinesService.getPipelines() would be called to fetch the new page
2. In the success handler, Poll.restart() would be called
3. This would invoke Poll.makeRequest(), which would fire off a new
request.

To fix this, we introduce a enable(), which will:

1. Update the request data accordingly
2. Clear the old timeout if necessary and start a new timer

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/58095

Refactor params for NotesActions

Closes #54924

See merge request gitlab-org/gitlab-ce!25278

Removes unneeded params from permitted list

This also fixes commenting on commits with a hash starting with a large
number

Docs serverless updates

See merge request gitlab-org/gitlab-ce!25497

Merge branch '58062-tracing-url-template-render-using-string-format-does-not-play-well-with-urls' into 'master'

Switch back to using regexps in tracing_url_template

Closes #58062

See merge request gitlab-org/gitlab-ce!25491

Merge branch 'docs-serverless-updates' of gitlab.com:gitlab-org/gitlab-ce into docs-serverless-updates

Docs: add details about restricted SSH keys

Closes #50489

See merge request gitlab-org/gitlab-ce!25478

Add an index page to admin area section

Closes #55234

See merge request gitlab-org/gitlab-ce!25375

Resolve "/admin/runners page fails with an SQL Statement Timeout"

Closes #53325

See merge request gitlab-org/gitlab-ce!25220

Lower the allowed Gitaly call count to 30

See merge request gitlab-org/gitlab-ce!25467

Prior to this change, 35 Gitaly RPCs were allowed. But recently there's
been a renewed interest in performance. By lowering the number of
calls new N + 1's will pop up.

Later commits will add blocks to ignore the raised errors, followed by
an issue for each to be fixed.

Ensure all lists are surrounded by new lines

See merge request gitlab-org/gitlab-ce!25479

Markdown renderers find it easier to determine
where lists start and end when lists are surrounded
by new lines.

For consistency, also ensure entries in the list
are aligned when they span multipls lines.