@Override
 public void renderHead(final IHeaderResponse response) {
   super.renderHead(response);
   response.render(
       JavaScriptReferenceHeaderItem.forReference(
           Application.get().getJavaScriptLibrarySettings().getJQueryReference()));
   response.render(
       StringHeaderItem.forString(WicketUtils.getCssForFavicon(getUrl("/favicon.ico"))));
   if (WebConfiguration.isDevelopmentMode() == true) {
     response.render(
         CssReferenceHeaderItem.forUrl(
             "mobile/jquery.mobile/jquery.mobile-" + JQUERY_MOBILE_VERSION + ".css"));
   } else {
     response.render(
         CssReferenceHeaderItem.forUrl(
             "mobile/jquery.mobile/jquery.mobile-" + JQUERY_MOBILE_VERSION + ".min.css"));
   }
   response.render(CssReferenceHeaderItem.forUrl("mobile/projectforge.css"));
   response.render(JavaScriptReferenceHeaderItem.forUrl("mobile/jquery.mobile/myconfig.js"));
   if (WebConfiguration.isDevelopmentMode() == true) {
     // response.renderJavaScriptReference("mobile/jquery.mobile/myconfig.js");
     response.render(
         JavaScriptReferenceHeaderItem.forUrl(
             "mobile/jquery.mobile/jquery.mobile-" + JQUERY_MOBILE_VERSION + ".js"));
   } else {
     // response.renderJavaScriptReference("mobile/jquery.mobile/myconfig.js");
     response.render(
         JavaScriptReferenceHeaderItem.forUrl(
             "mobile/jquery.mobile/jquery.mobile-" + JQUERY_MOBILE_VERSION + ".min.js"));
   }
 }