public function escalateAction($id){

    $userManager = $this->get('fos_user.user_manager');

    $entityManager = $this->get('doctrine')->getEntityManager();
    $user = $entityManager->find('IminitGeminiBundle:User', $id);

    $user->addRole('ROLE_ADMIN');
    $entityManager->flush();

//    $userManager->updateUser($user);

    return $this->redirect($this->generateUrl('_user_management'));
}