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

Conflicts:
- `app/lib/feed_manager.rb`:
  Not a real conflict, glitch-soc-only DM-related method
  too close to changed upstream stuff.
  Ported upstream changes.
- `app/services/batched_remove_status_service.rb`:
  Additional logic in glitch-soc to clear DMs from timelines.
  Ported upstream changes and fixed the DM TL clearing logic.
- `app/workers/scheduler/feed_cleanup_scheduler.rb`:
  Additional code in glitch-soc to clear DM timelines.
  Ported upstream changes.

spec/controllers/auth/registrations_controller_spec.rb

@@ -195,16 +195,19 @@ RSpec.describe Auth::RegistrationsController, type: :controller do
       end
     end
 
-    context 'approval-based registrations with valid invite' do
+    context 'approval-based registrations with valid invite and required invite text' do
       around do |example|
         registrations_mode = Setting.registrations_mode
+        require_invite_text = Setting.require_invite_text
         example.run
+        Setting.require_invite_text = require_invite_text
         Setting.registrations_mode = registrations_mode
       end
 
       subject do
         inviter = Fabricate(:user, confirmed_at: 2.days.ago)
         Setting.registrations_mode = 'approved'
+        Setting.require_invite_text = true
         request.headers["Accept-Language"] = accept_language
         invite = Fabricate(:invite, user: inviter, max_uses: nil, expires_at: 1.hour.from_now)
         post :create, params: { user: { account_attributes: { username: 'test' }, email: 'test@example.com', password: '12345678', password_confirmation: '12345678', 'invite_code': invite.code, agreement: 'true' } }