Merge pull request #4022 from Alys/partyAvatarSortOrder

improve and clarify party avatar sort options for header - fixes https://github.com/HabitRPG/habitrpg/issues/2239

public/js/controllers/groupsCtrl.js

@@ -220,6 +220,8 @@ habitrpg.controller("GroupsCtrl", ['$scope', '$rootScope', 'Shared', 'Groups', '
       'random': window.env.t('sortRandom'),
       'pets': window.env.t('sortPets'),
       'party_date_joined': window.env.t('sortJoined'),
+      'name': window.env.t('sortName'),
+      'backgrounds': window.env.t('sortBackgrounds'),
     };
 
   }])