Fix count of required approvals displayed on MR edit form

Closes #1078

See merge request !1082

Add docs on multiple issue boards

See merge request !1110

[ci skip]

Don't try to show assignee in approved_merge_request_email if there's no assignee

Closes #1601

See merge request !1103

Removed project edit visibility radio buttons

Closes gitlab-ce#27050 and gitlab-ce#27049

See merge request !1097

"Reset approvals on push" also reset approvals of a closed merged request

Closes #1457

See merge request !1051

Signed-off-by: Rémy Coutable <remy@rymai.me>

Document removing approval

See merge request !1086

Track Mattermost usage

See merge request !1071

[ci skip]

GitLab Pages documentation refactor

Closes #465

See merge request !1072

[ci skip]

CE upstream

Closes gitlab-ce#26785

See merge request !1096

Also removed duplicated allow request button checkbox

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/27050

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/27049

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

Force JSON parsing of approvals API response data.

Closes #1575

See merge request !1095

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

Fixed incorrect class names used in merge request widget

See merge request !1093

Merge request widget class names update

See merge request !8700