Add prometheus proxies

See merge request gitlab-org/gitlab-ee!15700

This adds prometheus proxies for project and group clusters. This will
be used for cluster metrics dashboards similar to how we currently do
environment metrics.

Add template for Alerts Service

See merge request gitlab-org/gitlab-ee!15733

**Please note:**

- Feature flag (`generic_alert_endpoint`)
- Part of https://gitlab.com/gitlab-org/gitlab-ee/issues/13203

The gross alternative was to add more haml field types, and inject
just a Vue button. As shown in [this mr][1], this is not a good way.

[1]: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/16029

Allow to load ECDSA certificates for pages domains

See merge request gitlab-org/gitlab-ce!32393

Just replace RSA.new with PKey.read

Fixes locale/gitlab.pot

See merge request gitlab-org/gitlab-ee!16271

Due to a bad merge conflict CE to EE conflict

Fix x-axis burndown chart offset by timezone

Closes #13521

See merge request gitlab-org/gitlab-ee!15690

Make use of timezone-mock to test for US/Pacific time

CE Backport: Fix x-axis burndown chart offset by timezone

See merge request gitlab-org/gitlab-ce!32754

Improve Keyboard shortcut help screen

Closes #65367

See merge request gitlab-org/gitlab-ce!31642

Add missing shortcuts, remove shortcuts that don't exist,
and reorder as needed

EE Port: Improve Keyboard shortcut help screen

See merge request gitlab-org/gitlab-ee!15102

Add missing shortcuts, remove shortcuts that don't exist,
and reorder as needed

Add asterisk to name field in new feature flag form

Closes #14800

See merge request gitlab-org/gitlab-ee!16248

Fix order-dependent spec failures with reCAPTCHA

Closes #67133

See merge request gitlab-org/gitlab-ce!32771

spec/controllers/registrations_controller_spec.rb polluted the test
environment by changing the Recaptcha configuration. We now stub the
controller's `verify_recaptcha` method instead of doing that.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/67133

Update rouge to v3.10.0

See merge request gitlab-org/gitlab-ce!32745

Add note about permissions in Doc MR template

See merge request gitlab-org/gitlab-ce!32755

Docs: Fix typo in "Description templates"

See merge request gitlab-org/gitlab-ce!32757

Update view for testability

See merge request gitlab-org/gitlab-ce!32644

End-to-end test for multiple issue boards on group level

Closes gitlab-org/quality/testcases#225

See merge request gitlab-org/gitlab-ee!16068

Back porting changes to trigger user create event on Trial sign up

See merge request gitlab-org/gitlab-ce!32676

Trigger system hook for user create event on Trial sign up

Closes customers-gitlab-com#632

See merge request gitlab-org/gitlab-ee!15908

Update index.md: fixed spelling mistake

See merge request gitlab-org/gitlab-ee!16228

Only show `/copy_metadata` when usable

See merge request gitlab-org/gitlab-ce!31735

Revert schema and add changelog
Add MR to changelog
Move asterisk outside of brackets