public function logoutAction()
{
$this->session->remove('identity');
$this->session->remove('identity-name');
$this->session->remove('identity-moderator');
$this->session->remove('identity-gravatar');
$this->session->remove('identity-email');
$this->session->remove('identity-theme');
$this->flashSession->success('Goodbye!');
return $this->discussionsRedirect();
}