Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- `app/models/form/admin_settings.rb`:
  New setting added upstream. Ported it.
- `app/views/statuses/_simple_status.html.haml`:
  Upstream removed RTL classes. Did the same.
- `config/settings.yml`:
  New setting added upstream. Ported it.

app/workers/scheduler/instance_refresh_scheduler.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class Scheduler::InstanceRefreshScheduler
+  include Sidekiq::Worker
+
+  sidekiq_options lock: :until_executed, retry: 0
+
+  def perform
+    Instance.refresh
+  end
+end