Fix links to deprecated doc page (speed_up_ssh => fast_ssh_key_lookup)

See merge request gitlab-org/gitlab-ee!3937

Prevent cluster migration spec from interfering with later specs

Closes #4479

See merge request gitlab-org/gitlab-ee!3936

If a later spec tries to set a field that is added to any of these models by a
later migration than the GCP clusters migration, it will fail because the
model's columns are cached.

We should always refer to models in migration specs by either their class in the
migration, or the table directly, using the `table` helper.

Add API for epics

Closes #4250

See merge request gitlab-org/gitlab-ee!3921

Add ability to reorder issues in epic

Closes #3694

See merge request gitlab-org/gitlab-ee!3745

CE upstream - Friday

Closes #3377, gitaly#854, and gitaly#825

See merge request gitlab-org/gitlab-ee!3929

Backport 'Rebase' feature from EE to CE

See merge request gitlab-org/gitlab-ee!3890

# Conflicts:
#	ee/lib/api/epic_issues.rb
#	spec/ee/spec/requests/api/epic_issues_spec.rb

API for epic issues

Closes #4250

See merge request gitlab-org/gitlab-ee!3907

Add group boards API endpoint

Closes #3413

See merge request gitlab-org/gitlab-ee!3663

Fix import project url not updating project name -- EE

See merge request gitlab-org/gitlab-ee!3911

New Crowdin translations

See merge request gitlab-org/gitlab-ee!3930

Some UI polish on Geo pages

Closes #4425

See merge request gitlab-org/gitlab-ee!3863

Resolve "Show DAST results in the MR widget"

Closes #4348

See merge request gitlab-org/gitlab-ee!3885

Use geo-nodes sprite icon where appropriate:
Instead of using the fontawesome globe icon, use the geo-nodes icon
for Geo related action.

Closes gitlab-org/gitlab-ee#4425.