[CE] Backport Identity.uniqueness_scope from EE

See merge request gitlab-org/gitlab-ce!18689

Forking repositories is handled by Gitaly by default

See merge request gitlab-org/gitlab-ce!18679

Change font for tables inside diff discussions

Closes #45485

See merge request gitlab-org/gitlab-ce!18660

Include documentation about STAGING_ENABLED variable for AutoDevops

See merge request gitlab-org/gitlab-ce!18675

Load branches on new merge request page asynchronously

Closes #37477

See merge request gitlab-org/gitlab-ce!18315

[ci skip]

Compute repository checksum by default

Closes gitaly#1146

See merge request gitlab-org/gitlab-ce!18648

Optimize Emoji Sprite Handling

See merge request gitlab-org/gitlab-ce!18576

Initial Rails implementation was introduced in
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/16018, and
acceptance testing was done in
https://gitlab.com/gitlab-org/gitaly/issues/881

Part of https://gitlab.com/gitlab-org/gitaly/issues/817

Revert "Merge branch '5480-sidebar-subscription-event-handling' into 'master'"

Closes #45979

See merge request gitlab-org/gitlab-ce!18692

Remove old GitLab Shell namespace actions implementations

See merge request gitlab-org/gitlab-ce!18681

Deprecation of ActionView's time_ago_in_words

Closes #45761

See merge request gitlab-org/gitlab-ce!18607

Increase new issue metadata form margin

Closes #44134

See merge request gitlab-org/gitlab-ce!18630

Save and expose only generic merge error

See merge request gitlab-org/gitlab-ce!18646

Merge branch '45970-broken-master-in-spec-features-issues-user_uses_slash_commands_spec-rb' into 'master'

Resolve "Broken master in spec/features/issues/user_uses_slash_commands_spec.rb"

Closes #45970

See merge request gitlab-org/gitlab-ce!18687

This reverts merge request !18682

Move WorkInProgress vue component

See merge request gitlab-org/gitlab-ce!17536

Move SidebarTimeTracking vue component

See merge request gitlab-org/gitlab-ce!18677

Move TimeTrackingNoTrackingPane vue component

See merge request gitlab-org/gitlab-ce!18676

Originates in 'SamlProvider has many linked Identities' from EE

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

Platform: Use component to emit event on Subscription toggle component instead of eventHub

See merge request gitlab-org/gitlab-ce!18682

Moves the calls to Gitaly, no matter what the feature flag values are.

Improve quick actions summary preview

Closes #45892

See merge request gitlab-org/gitlab-ce!18659

Replace the `project/source/markdown_render.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ce!18525

[Rails5] Fix spec/services/applications/create_service_spec.rb

See merge request gitlab-org/gitlab-ce!18665

[Rails5] Fix spec/models/notification_setting_spec.rb

See merge request gitlab-org/gitlab-ce!18664

[Rails5] Fix enum question mark methods

See merge request gitlab-org/gitlab-ce!18662

Display and revoke active sessions

See merge request gitlab-org/gitlab-ce!17867