/**
  * Overrides the Symphony isLoggedIn function to allow Authors
  * to become logged into the backend when `$_REQUEST['auth-token']`
  * is present. This logs an Author in using the loginFromToken function.
  * A token may be 6 or 8 characters in length in the backend. A 6 or 16 character token
  * is used for forget password requests, whereas the 8 character token is used to login
  * an Author into the page
  *
  * @see core.Symphony#loginFromToken()
  * @return boolean
  */
 public static function isLoggedIn()
 {
     if (isset($_REQUEST['auth-token']) && $_REQUEST['auth-token'] && in_array(strlen($_REQUEST['auth-token']), array(6, 8, 16))) {
         return parent::loginFromToken($_REQUEST['auth-token']);
     }
     return parent::isLoggedIn();
 }