Assignee dropdown does not display selected assignee

Closes #2472

See merge request !11744

Creates a mediator for pipeline details vue in order to mount several vue apps with the same data

Closes #31849

See merge request !11732

31616-add-uptime-of-gitlab-instance-in-admin-area

Closes #31616

See merge request !11590

Displays loading icon in async buttons inline

Closes #32954

See merge request !11735

Resolve "pipeline_schedules pages throwing error 500"

Closes #32790

See merge request !11706

New Migration/UpdateColumnInBatches cop

Closes #32677

See merge request !11611

Resolve "Wiki is not searchable with Guest permissions"

Closes #30917

See merge request !11613

Strip trailing whitespaces in submodule URLs

Closes #33018

See merge request !11753

Replace 'starred_projects.feature' spinach test with an rspec analog

See merge request !11752

Use headless Google Chrome browser in GitLab QA

Closes gitlab-qa#45 and gitlab-qa#48

See merge request !11680

Rework project authorizations and nested groups for better performance

See merge request !10885

Add performance deltas between app deployments on Merge Request widget

Closes #27439

See merge request !11730

Add codeclimate.yml

See merge request !11757

Resolve "User autocomplete per_page does not work"

Closes #32977

See merge request !11742

Add missing cohorts to tab nav

See merge request !11766