When a project uses fast-forward merging strategy user has
to rebase MRs to target branch before it can be merged.
Now user can do rebase in UI by clicking 'Rebase' button
instead of doing rebase locally.

This feature was already present in EE, this is only backport
of the feature to CE.

Rebase license check is now removed.

Related to !16071
Related to #40301

Revert "Add ee only comment to boards_bundle.js ee imports"

See merge request gitlab-org/gitlab-ee!3927

This reverts commit de4c74f9

CE upstream - Wednesday

Closes gitaly#813, #3482, gitaly#847, and gitaly#852

See merge request gitlab-org/gitlab-ee!3906

Fix rebase status check throwing flash message

Closes #4473

See merge request gitlab-org/gitlab-ee!3922

Check if shard configuration is same across Geo nodes

Closes #3243

See merge request gitlab-org/gitlab-ee!3772

Update Kubernetes service documentation

See merge request gitlab-org/gitlab-ee!3920

Fix https://gitlab.com/gitlab-org/gitlab-ee/issues/4473

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

States this service was deprecated on 10.3 and his behavior depends on
the kubernetes service status. Also includes a link for the release post
for more information.

CE Port: 41054 Disable creation of new kubernetes integrations

See merge request gitlab-org/gitlab-ee!3916

EE: Unify CE and EE tests in spec/controllers/projects/artifacts_controller_spec.rb

See merge request gitlab-org/gitlab-ee!3883

EE: Enable our own custom cops, again?

See merge request gitlab-org/gitlab-ee!3882

Show correct edition for EE free

Closes gitlab-ce#41092

See merge request gitlab-org/gitlab-ee!3894

Fix namespace ambiguity with Kubernetes Pod definitions

Closes #4468

See merge request gitlab-org/gitlab-ee!3918

This was causing a spec failure between Gitlab::Kubernetes::Helm::Pod and
Gitlab::Kubernetes::Helm::Api::Pod if one spec loaded the former
definition first.

Closes #41458

Fix a bug where branch could not be delete due to a push rule config

Closes #4078

See merge request gitlab-org/gitlab-ee!3900

Move git operations for UpdateRemoteMirrorService into Gitlab::Git

Closes gitaly#841

See merge request gitlab-org/gitlab-ee!3824

Prepare Gitlab::Git::Repository#rebase for Gitaly migration

See merge request gitlab-org/gitlab-ee!3908

Geo backend changes for Vue admin page

See merge request gitlab-org/gitlab-ee!3858

Improve closed/merged events queries performance on Projects::MergeRequestsController#show.json

See merge request gitlab-org/gitlab-ee!3679

More descriptive error when clocks between Geo nodes are out of sync

Closes #4276

See merge request gitlab-org/gitlab-ee!3860