(js) Fix caching of user rights

UI/WebServerResources/js/Common/Acl.service.js

@@ -125,6 +125,7 @@
     return acls.then(function() {
       var i = _.indexOf(_.map(_this.users, 'uid'), uid);
       if (i >= 0) {
+        _this.users[i].$shadowRights = null;
         _this.users.splice(i, 1);
       }
     });

UI/WebServerResources/js/Common/User.service.js

@@ -256,7 +256,7 @@
           _this.rights[key] = 0;
       });
     }
-    else {
+    else if (this.$shadowRights) {
       // Restore initial rights
       this.rights = angular.copy(this.$shadowRights);
     }