Use a warning icon for a stage with allowed to fail builds

Closes #21948

See merge request !8503

Change twitter likes URL in README

See merge request !8702

Use archived trait for project in specs instead model column

See merge request !8635

Mattermost fixes

See merge request !8654

correct the prometheus feature configuration according to https://gitlab.com/git…

See merge request !8703

correct the prometheus feature configuration according to https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/files/gitlab-config-template/gitlab.rb.template#L1147

Make cycle_analytics_events_spec.rb side-effect free

Closes #26622

See merge request !8594

Change the twitter `/favorites` to `/likes`

Merge request widget class names update

See merge request !8700

[ci skip]

Replace merge request widget body

See merge request !8697

Add Prometheus docs

See merge request !8699

[ci skip]

Fixed bug with merge immediately button not working

See merge request !8696

[ci skip]

Replaces https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/1237
Omnibus MR: https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/1227
Omnibus issue: https://gitlab.com/gitlab-org/omnibus-gitlab/issues/1481

This was caused by using 'this' in a fat arrow function, so 'this' would not equal the jQuery element

Update autodeploy templates [ci skip]

See merge request !8695

Button by itself will submit forms. Button type button willn't

Closes #26999

See merge request !8694

Revert "Merge branch 'dont-persist-application-settings-in-test-env' into 'master'"

See merge request !8690

Introduced an offset limit to prevent the dropdown from going far right

Closes #26618 and #27023

See merge request !8679

This reverts merge request !8573

Fix Merge When Pipeline Succeeds immediate merge bug

Closes #26969

See merge request !8685

Filtered search input click back at token

See merge request !8617

Fix DropLab in IE11 v1 (merge edition)

Closes #26785

See merge request !8689

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/26785