Fix text/plain emails for approval/unapproval

Closes #3924

See merge request gitlab-org/gitlab-ee!3266

Add ability to enforce that only the author of a commit can push those changes back to the repository

Closes #2445

See merge request gitlab-org/gitlab-ee!3086

Add system hooks user_rename and group_rename

Closes gitlab-ce#39596

See merge request gitlab-org/gitlab-ee!3257

Prune Geo event log

Closes #3577

See merge request gitlab-org/gitlab-ee!3172

Geo repository sync over HTTPS

Closes #3341

See merge request gitlab-org/gitlab-ee!3116

By actually checking if it deletes the correct Geo Event Log events.

The following is not supported:

```ruby
allow_any_instance_of(Geo::NodeStatusService).to receive(:call) { build(:geo_node_status, :healthy, cursor_last_event_id: 3) }
allow_any_instance_of(Geo::NodeStatusService).to receive(:call) { build(:geo_node_status, :healthy, cursor_last_event_id: 10) }
```

So instead, mock `Geo::NodeStatusService.new` and make it return a
`double` that can be used to mock all the things.

When there are no secondary nodes configured, there is no need to
generate Geo Log Events because no one will handle them.

This worker runs regularly to check all secondary nodes what there
last handled Geo Log event was. All the Geo Log events that are
handled by all nodes are pruned from the database. If the primary
failed to get the status of one of the nodes, nothing is done.

Closes gitlab-org/gitlab-ee#3577.

Add project actions in Audit events

Closes #1371

See merge request gitlab-org/gitlab-ee!3160

Remove Private Tokens

See merge request gitlab-org/gitlab-ee!3252

Applyed Patch for CI/CD Icons

See merge request gitlab-org/gitlab-ee!3255

Resolve "Failed to rebase MR from forked repo"

Closes #3900

See merge request gitlab-org/gitlab-ee!3258

Suppress MergeableSelector warning candidates in EE-only files

Closes #3879

See merge request gitlab-org/gitlab-ee!3225

IssueBoards: Show project name in group context inside board item and sidebar.

Closes #3239

See merge request gitlab-org/gitlab-ee!3242

Refactor responsive table styles to support nested error block -- EE merge edition

See merge request gitlab-org/gitlab-ee!3251

Show epic view

Closes #3550 and #3693

See merge request gitlab-org/gitlab-ee!3126

Pg ha updates docs

Closes omnibus-gitlab#2901, omnibus-gitlab#2899, omnibus-gitlab#2902, and omnibus-gitlab#2903

See merge request gitlab-org/gitlab-ee!3226

[EE] Refactor controller calls into services

Closes #3544

See merge request gitlab-org/gitlab-ee!3029