Merge commit 'c40ab43dc703be988c277d4ba6b7987a3a80e16c' into glitch-soc/merge-upstream

Conflicts:
- `app/helpers/application_helper.rb`:
  Upstream added a helper where glitch-soc had its own, not really
  a conflict.
  Added upstream's helper.
- `lib/sanitize_ext/sanitize_config.rb`:
  Upstream renamed a constant that was used slightly differently in glitch-soc.
  Renamed it as upstream did.

config/routes/admin.rb

@@ -145,8 +145,10 @@ namespace :admin do
   end
 
   resources :users, only: [] do
-    resource :two_factor_authentication, only: [:destroy], controller: 'users/two_factor_authentications'
-    resource :role, only: [:show, :update], controller: 'users/roles'
+    scope module: :users do
+      resource :two_factor_authentication, only: [:destroy]
+      resource :role, only: [:show, :update]
+    end
   end
 
   resources :custom_emojis, only: [:index, :new, :create] do