Matheo13

        render: function () {
            var _this = this;

            var $el = $(this.template);
            this.setElement($el);

            if(this.formGrid){
                $el.find('.input-group-addon').addClass('hide');
            }
            

Matheo13

        $.ajaxSetup({
          beforeSend: function(xhr) {
              xhr.setRequestHeader('Authorization', '');
          },
          error: function(jqXhr, status, error) {
            self.checkTokenValidity(true);
          }
        });