public function logoutAction()
{
$translator = \Zend_Registry::get('container')->getService('translator');
$auth = Zend_Auth::getInstance();
if ($auth->hasIdentity()) {
Article::UnlockByUser((int) $auth->getIdentity());
$auth->clearIdentity();
setcookie('NO_CACHE', 'NO', time() - 3600, '/');
unset($_SESSION['statDisplayed']);
}
$this->_helper->FlashMessenger($translator->trans('You were logged out.', array(), 'users'));
$this->_helper->redirector('index', 'index');
}