message: Added role="alert" for react/angular/jquery error messages
diff: @@ -159,6 +159,6 @@ export class SurveyQuestionErrors extends ReactSurveyElement {
  var key = "error" + i;
  errors.push(this.creator.renderError(key, errorText, this.cssClasses));
  }
  - return (<div className={this.cssClasses.error.root}>{errors}</div>);
  + return (<div role="alert" className={this.cssClasses.error.root}>{errors}</div>);
  }
  }
  