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

Conflicts:
- `app/controllers/concerns/sign_in_token_authentication_concern.rb`:
  Conflict caused because of glitch-soc's theming system.
  Took upstream's new code and applied the theming system changes on top
  of it.
- `app/controllers/concerns/two_factor_authentication_concern.rb`:
  Conflict caused because of glitch-soc's theming system.
  Took upstream's new code and applied the theming system changes on top
  of it.

app/lib/access_token_extension.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module AccessTokenExtension
+  extend ActiveSupport::Concern
+
+  included do
+    after_commit :push_to_streaming_api
+  end
+
+  def revoke(clock = Time)
+    update(revoked_at: clock.now.utc)
+  end
+
+  def push_to_streaming_api
+    Redis.current.publish("timeline:access_token:#{id}", Oj.dump(event: :kill)) if revoked? || destroyed?
+  end
+end