/////////////////////////////////////////////////////
/////////////////////////////////////////////////////
public static void errorNotification(Application application, I18NSource messageSource, String message) {
Notification notification = new Notification(messageSource.getMessage("notification.error"),
"<br/><b>" + message + "</b>", TYPE_ERROR_MESSAGE);
notification.setPosition(POSITION_CENTERED);
notification.setStyleName("error");
application.getMainWindow().showNotification(notification);
}