Migrate creating/deleting a branch to Gitaly

See merge request !13864

Fixed sidebar icon size in ie11

Closes #37512

See merge request !14080

Resolve "Projects::CommitsController#show is slow partially due to SQL queries"

Closes #34509

See merge request !13762

Clarify documentation about performance bar

[ci skip]

See merge request !14085

First time contributor badge

Closes #35161

See merge request !13902

Fix division by zero for blame age map

Closes #35441

See merge request !13803

Fix problems sanitizing URLs with empty passwords

Closes gitlab-ee#3352

See merge request !14083

Add API endpoint for downloading a single job artifact

Closes #37196

See merge request !14027

Put Admin loggers in before_action for easier overriding in EE

See merge request !14081

API fix for non UTF-8 data

Closes #35942

See merge request !14038

Add TFS migration docs

See merge request !13934

Add collapsable sections for Pipeline Settings

Closes #37275

See merge request !13951

Profile updates from providers

See merge request !12968

# Conflicts:
#   doc/user/project/import/index.md

Improvements to breadcrumbs

Closes #35269 and #36460

See merge request !13582

Add CVS migration guide

See merge request !13928

Closes #37512

Port of ee translations

See merge request !14076

Internal API changes to decouple redis from Shell

Closes gitaly#520

See merge request !13971

Make it easier to override the set of loggers, by putting them in a
separate method.

Also modify spec so it tests for links, instead of checking for
regular text.

remove some lint