/**
  * Index page
  */
 public function index()
 {
     $extensionManager = \common_ext_ExtensionsManager::singleton();
     $all = array();
     $installed = array();
     foreach ($extensionManager->getInstalledExtensions() as $ext) {
         $all[] = $ext;
         $installed[] = $ext->getId();
     }
     foreach ($extensionManager->getAvailableExtensions() as $ext) {
         $all[] = $ext;
     }
     $all = \helpers_ExtensionHelper::sortById($all);
     $this->setData('extensions', $all);
     $this->setData('installedIds', $installed);
     $this->setView('extensionManager/view.tpl');
 }