Merge commit '40ba6e119b7457161fd43b449875d0fb9d473c1a' into glitch-soc/merge-upstream

Conflicts:
- `app/controllers/concerns/web_app_controller_concern.rb`:
  Upstream changed the order of Action Controller filters for web app
  controllers.
  Glitch-soc has an extra filter due to its theming system.
  Changed the order accordingly.
- `app/views/settings/preferences/appearance/show.html.haml`:
  Conflict due to an extra newline in glitch-soc.
  Removed that newline and applied upstream's changes.

app/controllers/concerns/web_app_controller_concern.rb

@@ -4,11 +4,11 @@ module WebAppControllerConcern
   extend ActiveSupport::Concern
 
   included do
-    prepend_before_action :redirect_unauthenticated_to_permalinks!
+    vary_by 'Accept, Accept-Language, Cookie'
+
+    before_action :redirect_unauthenticated_to_permalinks!
     before_action :set_pack
     before_action :set_app_body_class
-
-    vary_by 'Accept, Accept-Language, Cookie'
   end
 
   def skip_csrf_meta_tags?
@@ -23,8 +23,10 @@ module WebAppControllerConcern
     return if user_signed_in? # NOTE: Different from upstream because we allow moved users to log in
 
     redirect_path = PermalinkRedirector.new(request.path).redirect_path
+    return if redirect_path.blank?
 
-    redirect_to(redirect_path) if redirect_path.present?
+    expires_in(15.seconds, public: true, stale_while_revalidate: 30.seconds, stale_if_error: 1.day) unless user_signed_in?
+    redirect_to(redirect_path)
   end
 
   def set_pack

app/controllers/follower_accounts_controller.rb

@@ -3,7 +3,6 @@
 class FollowerAccountsController < ApplicationController
   include AccountControllerConcern
   include SignatureVerification
-  include WebAppControllerConcern
 
   vary_by -> { public_fetch_mode? ? 'Accept, Accept-Language, Cookie' : 'Accept, Accept-Language, Cookie, Signature' }
 

app/controllers/following_accounts_controller.rb

@@ -3,7 +3,6 @@
 class FollowingAccountsController < ApplicationController
   include AccountControllerConcern
   include SignatureVerification
-  include WebAppControllerConcern
 
   vary_by -> { public_fetch_mode? ? 'Accept, Accept-Language, Cookie' : 'Accept, Accept-Language, Cookie, Signature' }