Issue #3349616 by Eduardo Morales Alberti, CRZDEV, Graber: Add throbber on Ajax petition

        var $selectionInfo = this.$selectionInfo;

        var target_uri = drupalSettings.path.baseUrl + drupalSettings.path.pathPrefix + 'views-bulk-operations/ajax/' + this.view_id + '/' + this.display_id;

        $.ajax(target_uri, {

          method: 'POST',

          data: {

        var ajaxDrupal = Drupal.ajax({

          url: target_uri,

          progress: false,

          submit: {

            list: list,

            op: op

          },

          success: function (data) {

          }

        });

        ajaxDrupal.original_success = ajaxDrupal.success;

        ajaxDrupal.success = function (data, status) {

          $selectionInfo.html(data.selection_info);

          $summary.text(Drupal.formatPlural(data.count, 'Selected 1 item', 'Selected @count items'));

          selectionObject.toggleButtonsState();

          }

        });

          this.original_success(data, status);

        };

        ajaxDrupal.execute();

      }

    }

  };