Rebase and Squash in progress are Gitaly only

Closes gitaly#865 and gitaly#1018

See merge request gitlab-org/gitlab-ce!19987

Move info attributes to mandatory

Closes gitaly#1082

See merge request gitlab-org/gitlab-ce!19988

Move count commit to mandatory

Closes gitaly#330

See merge request gitlab-org/gitlab-ce!19984

License detection happens solely through Gitaly now

Closes gitaly#1026

See merge request gitlab-org/gitlab-ce!19986

Fix omniauth link, site has moved.

See merge request gitlab-org/gitlab-ce!19957

Make it explicit where is the gitlab.rb file

See merge request gitlab-org/gitlab-ce!19963

Add Open in Xcode docs

See merge request gitlab-org/gitlab-ce!19872

Fix flakey time-sensitive notes creation specs that rely on background Sidekiq jobs

Closes #48093

See merge request gitlab-org/gitlab-ce!19979

Rails5 fix format in uploads actions

Closes #46276

See merge request gitlab-org/gitlab-ce!19907

Closes https://gitlab.com/gitlab-org/gitaly/issues/1082

Bring CE-EE parity to migrations/remove_soft_removed_objects_spec.rb

See merge request gitlab-org/gitlab-ce!19966

Closes https://gitlab.com/gitlab-org/gitaly/issues/865
Closes https://gitlab.com/gitlab-org/gitaly/issues/1018

Extract EE specific files/lines for spec/lib/gitlab/ci

See merge request gitlab-org/gitlab-ce!19971

Migration: https://gitlab.com/gitlab-org/gitaly/issues/1026

Conflicts:
	lib/gitlab/git/repository.rb

Fix nil formats test

Closes #47833

See merge request gitlab-org/gitlab-ce!19941

Closes https://gitlab.com/gitlab-org/gitaly/issues/330

Fix indentation in CI yaml

See merge request gitlab-org/gitlab-ce!19737

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/48093

We use `perform_enqueued_jobs` because it is "adapter-agnostic so it's better to use it over Sidekiq::Testing.inline!." -- https://gitlab.com/gitlab-org/gitlab-ce/issues/22991

Remove top margin from checkboxes in integrations page

See merge request gitlab-org/gitlab-ce!19976

Resolve "BS4: Labels in issues system notes are misaligned again"

Closes #48072

See merge request gitlab-org/gitlab-ce!19972

Resolve "Use long sha version in MR widget copy to clipboard button"

Closes #48050

See merge request gitlab-org/gitlab-ce!19955

Buttons disappear on merge request page in some case

Closes #46861 and #14348

See merge request gitlab-org/gitlab-ce!19176

CE Backport: Add styles for persistent notice banner

See merge request gitlab-org/gitlab-ce!19968

Updates to `.po` & `.pot` linting

Closes #46096 et #39292

See merge request gitlab-org/gitlab-ce!18779

port 5956-auto-devops-multi-cluster-help-text to CE

See merge request gitlab-org/gitlab-ce!19680

Save people an extra Google search if this is the
first doc they're reading.

Allow trailing whitespace on blockquote fence lines

See merge request gitlab-org/gitlab-ce!19960

Redirect favicon.(png|ico) to actual favicon asset or upload

Closes #47840

See merge request gitlab-org/gitlab-ce!19956

Update README.md to clarify EFS is slow and not to use this guide.

See merge request gitlab-org/gitlab-ce!19852