Fix display of Admin module on small devices

UI/WebServerResources/js/Administration/AdministrationAclController.js

@@ -19,6 +19,7 @@
     vm.selectUser = selectUser;
     vm.removeUser = removeUser;
     vm.getTemplate = getTemplate;
+    vm.close = close;
     vm.save = save;
 
     vm.userToAdd = '';
@@ -69,6 +70,13 @@
       }
     }
 
+    function close() {
+      $state.go('administration.rights').then(function() {
+        delete vm.user.selectedFolder;
+        vm.user = null;
+      });
+    }
+
     function save() {
       stateFolder.$acl.$saveUsersRights(stateFolder.owner).then(function() {
         $mdToast.show(