public function createAndPersistConfig()
{
$siteconfig = new ConfigContainer();
$siteconfig->setName('main');
$siteconfig->setConfig(array('server_timezone' => 'Europe/Paris', 'enable_caldav' => true, 'enable_carddav' => true, 'enable_versioncheck' => true));
$this->entityManager->persist($siteconfig);
$this->entityManager->flush();
}