message: Add description for survey.showInvisibleElements property,
diff: @@ -1675,6 +1675,9 @@ export class SurveyModel extends Base
  this.setPropertyValue("isDesignMode", value);
  this.onIsSinglePageChanged();
  }
  + /**
  + * Set this property to true, to show all elements in the survey, regardless their visibility. It is false by default.
  + */
  public get showInvisibleElements(): boolean {
  return this.getPropertyValue("showInvisibleElements", false);
  }
  