fix issue when entity removed from group

Author: nopbyte

lib/level-storage.js

@@ -488,8 +488,8 @@ LevelStorage.prototype.removeEntityFromGroupPromise = function (group_name, owne
         if (group_entities.length === entity.groups.length) {
           return rollback(t_entities, t_groups, reject.bind(this, createError(409, "entity with id " + pkToString(getPk("entities", entity)) + " is not in group with group name " + group_name + " owned by " + owner + " seems there is an inconsistency")));
         } else {
-          entity.groups = entity_groups;
-          group.entities = group_entities;
+          entity.groups = group_entities;
+          group.entities = entity_groups;
           return updateSomething("entities", entity_pk, entity, t_entities);
         }
       }).then(function (result) {