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

Conflicts:
- `app/controllers/application_controller.rb`:
  Conflict due to theming system.
- `app/controllers/oauth/authorizations_controller.rb`:
  Conflict due to theming system.

app/controllers/oauth/authorizations_controller.rb

@@ -6,6 +6,7 @@ class Oauth::AuthorizationsController < Doorkeeper::AuthorizationsController
   before_action :store_current_location
   before_action :authenticate_resource_owner!
   before_action :set_pack
+  before_action :set_cache_headers
 
   include Localized
 
@@ -32,4 +33,8 @@ class Oauth::AuthorizationsController < Doorkeeper::AuthorizationsController
   def truthy_param?(key)
     ActiveModel::Type::Boolean.new.cast(params[key])
   end
+
+  def set_cache_headers
+    response.headers['Cache-Control'] = 'no-cache, no-store, max-age=0, must-revalidate'
+  end
 end