public function editAction($groupname)
{
$group = $this->findGroupBy('name', $groupname);
$form = $this->container->get('fos_user.form.group');
$form->process($group);
return $this->container->get('templating')->renderResponse('FOSUserBundle:Group:edit.html.' . $this->getEngine(), array('form' => $form, 'groupname' => $group->getName()));
}