public function index(Application $app, Request $request)
{
$DeviceType = $app['eccube.repository.master.device_type']->find(DeviceType::DEVICE_TYPE_PC);
$PageLayouts = $app['eccube.repository.page_layout']->getPageList($DeviceType);
$event = new EventArgs(array('DeviceType' => $DeviceType, 'PageLayouts' => $PageLayouts), $request);
$app['eccube.event.dispatcher']->dispatch(EccubeEvents::ADMIN_CONTENT_PAGE_INDEX_COMPLETE, $event);
return $app->render('Content/page.twig', array('PageLayouts' => $PageLayouts));
}