code: function(first) {
      if (first === "/") {
          return "/" + _url_join.apply(_url_join, [].splice.call(arguments, 1));
      } else {
          return _url_join.apply(_url_join, [].splice.call(arguments, 0));
      }
  }
docs: This is to replace globally using url-join
  because it does strange things when you
  request a leading "/"