Approval in backend

backend/es/basis.json

@@ -289,6 +289,8 @@
         "general": "General",
         "regular": "Regular",
         "tree_view": "Tree view",
-        "hierarchy": "Hierarchy"
+        "hierarchy": "Hierarchy",
+        "set_new_superordinate": "Set new superordinate",
+        "unset_superordinate": "Remove superordinate"
     }
 }