/**
  * Enables an extension
  */
 public function enable()
 {
     $extId = $this->getRequestParameter('id');
     \common_ext_ExtensionsManager::singleton()->setEnabled($extId, true);
     MenuService::flushCache();
     echo json_encode(array('success' => true, 'message' => __('Disabled %s', $this->getRequestParameter('id'))));
 }