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/controllers/api/v1/instances/peers_controller.rb

@@ -8,7 +8,7 @@ class Api::V1::Instances::PeersController < Api::BaseController
 
   def index
     expires_in 1.day, public: true
-    render_with_cache(expires_in: 1.day) { Account.remote.domains }
+    render_with_cache(expires_in: 1.day) { Instance.where.not(domain: DomainBlock.select(:domain)).pluck(:domain) }
   end
 
   private