/**
* Store uid and token for the active user
*
* @param User $user
* @return void
*/
public static function setSessionUser(UserModel $user)
{
self::$uid = $user->getID();
self::$token = $user->get_facebook_token();
self::$user = $user;
self::getClient()->set_user(self::$uid, self::$token);
}