Fix incorrect spec filenames which were ingored by CI

Closes #2250

See merge request !1709

Refactor deploy boards into vue files

See merge request !1694

Added info about Admin user ability to push to protected branches.

See merge request !1009

Test both PostgreSQL and MySQL for the win

See merge request !1646

* Add Audit events link to project settings tab and make audit tests work
* Fix 404 when remove deploy key
* Fix pipelines quota specs
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Make handler metric params more explicit

See merge request !1696

Refactor add_users method for project and group [EE]

See merge request !1697

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This lets us track how many incoming emails a GitLab instance is processing, by
email type (handler) and by project (where applicable).

Remove duplicated tests

See merge request !1687

[ci skip]

[ci skip]

Docs for canary deployments vol 2

Closes gitlab-ce#31270

See merge request !1704

[ci skip]

Replace service_desk_enabled.png

See merge request !1701

Docs for resolvable discussions

See merge request !1700

Check if incoming emails and email key are available for service desk

Closes #2160

See merge request !1690

- Move to dicsussions/index.md
- Bring back previous path with a link to new location
- Reorder sections

Remove period from burndown charts warning help link

See merge request !1698

Port of environments-vue-3 to EE

See merge request !1693

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>