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

Conflicts:
	app/javascript/mastodon/initial_state.js
	db/schema.rb

Upstream added a new field to initial_state.
Not too sure about what happened with db/schema.rb though…

app/controllers/auth/registrations_controller.rb

@@ -3,6 +3,7 @@
 class Auth::RegistrationsController < Devise::RegistrationsController
   layout :determine_layout
 
+  before_action :set_invite, only: [:new, :create]
   before_action :check_enabled_registrations, only: [:new, :create]
   before_action :configure_sign_up_params, only: [:create]
   before_action :set_pack
@@ -52,7 +53,7 @@ class Auth::RegistrationsController < Devise::RegistrationsController
   end
 
   def allowed_registrations?
-    Setting.open_registrations || (invite_code.present? && Invite.find_by(code: invite_code)&.valid_for_use?)
+    Setting.open_registrations || @invite&.valid_for_use?
   end
 
   def invite_code
@@ -73,6 +74,10 @@ class Auth::RegistrationsController < Devise::RegistrationsController
     @instance_presenter = InstancePresenter.new
   end
 
+  def set_invite
+    @invite = invite_code.present? ? Invite.find_by(code: invite_code) : nil
+  end
+
   def determine_layout
     %w(edit update).include?(action_name) ? 'admin' : 'auth'
   end