Merge branch 'dosuken123/gitlab-ce-2989-run-cicd-pipelines-on-a-schedule-idea1-basic-backend-implementation-with-quick-ui' into 'master'

Add "engineering" UI for Pipeline Schedule

See merge request !10533

Fix rake test to import Github repositories

See merge request !10549

Remove wrong user email from CI variables example output

See merge request !10554

[ci skip]

Optimise Pipelines > Jobs index controller

Closes #27389

See merge request !10546

Fixed duplicate jQuery AJAX spyon

See merge request !10531

Fix invalidating Project build status cache to often

See merge request !10313

Protected Tags

Closes #18471

See merge request !10356

Remove `undefined` class from `.emoji-menu-list`

Closes #30496

See merge request !10522

Bump migration paths version

See merge request !10538

Moved the monitoring button inside the show view for the environments page

Closes #30463

See merge request !10514

shows go back link only when history is available

Closes #27580

See merge request !9017

Skimming over the job I noticed that the version is way behind in
history, which ansich is a good thing. However, the first couple of
migrations have been tested ad infinitum at this point, plus it adds to
the number of objects to fetch for this job.

resolve "Status icons overlap sidebar on mobile"

Closes #30587

See merge request !10525