Fix `downtime_check` job

See merge request gitlab-org/gitlab-ce!18840

Docs: document the redirect_to method

See merge request gitlab-org/gitlab-ce!18788

Docs: add custom descriptions to most relevant docs

Closes gitlab-com/gitlab-docs#200

See merge request gitlab-org/gitlab-ce!18789

Add docs for group runners

Closes #10244

See merge request gitlab-org/gitlab-ce!18807

Updates Clair container scanning GitLab CI configuration

Closes #45819

See merge request gitlab-org/gitlab-ce!18614

15fcd965 (!18547) squashes old migrations
to a single one.

Old migrations had `rubocop:disable all` rule, but the new migration doesn't
have it, so the `downtime_check` fails.

This commit explicitly tells that the migration requires downtime.

Resolve "Improve i18n of "Runners""

Closes #46115

See merge request gitlab-org/gitlab-ce!18838

Resolve "Printing wiki pages"

Closes #23465

See merge request gitlab-org/gitlab-ce!18834

Set `runner_type` for cluster/application

See merge request gitlab-org/gitlab-ce!18832

Replace the `project/ff_merge_requests.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ce!18800

Raise InvalidRepository error for non-valid git repositories

See merge request gitlab-org/gitlab-ce!18594

Add missing parens to make consistent in project_spec and runner_spec

See merge request gitlab-org/gitlab-ce!18808

Update asset_sync ~> 2.2.0 to ~> 2.4

See merge request gitlab-org/gitlab-ce!18762

Cleanly handle plural name for ghost user migration

See merge request gitlab-org/gitlab-ce!18798

Add database foreign key between pipelines and builds

Closes #46035

See merge request gitlab-org/gitlab-ce!18822

Squash migrations from 2013

See merge request gitlab-org/gitlab-ce!18547

Resolve "Remove remaining grey buttons"

Closes #44319

See merge request gitlab-org/gitlab-ce!18795

Removes RemoteMirror related TODO from project_spec

See merge request gitlab-org/gitlab-ce!18814

Add missing security process link for developers

See merge request gitlab-org/gitlab-ce!18812

Fix modal width of shortcuts help page

See merge request gitlab-org/gitlab-ce!18766

Signed-off-by: Lars Greiss <l.greiss@mediacologne.de>

Fixed tooltip & spacing of merge request icon in IDE

Closes #46121 and #46123

See merge request gitlab-org/gitlab-ce!18805