/**
  * transforms a menu array into a menu link
  * @param array $menu
  * @return string $str
  */
 public static function parseMenuLinkFromArray($menu)
 {
     if (!isset($menu['extra'])) {
         $menu['extra'] = array();
     }
     if (isset($menu['auth']) && !empty($menu['auth'])) {
         if (!session::checkAccessClean($menu['auth'])) {
             return false;
         }
         return html::createLink($menu['url'], $menu['title'], $menu['extra']);
     } else {
         return html::createLink($menu['url'], $menu['title'], $menu['extra']);
     }
 }