anchor.diff:  if (appDesc != null) {
     appTitle = appName + " :: " + appDesc;
   }
  +
  +String extraHead = "/index-head.jsp";
  +String extraFoot = "/index-foot.jsp";
  +String extraButtons = "/index-nav-buttons.jsp";
  +
  +if (pageContext.getServletContext().getResource(extraHead) == null) {
  +	extraHead = null;
  +}
  +if (pageContext.getServletContext().getResource(extraFoot) == null) {
  +	extraFoot = null;
  +}
  +if (pageContext.getServletContext().getResource(extraButtons) == null) {
  +	extraButtons = null;
  +}
  +
   %>
   <!DOCTYPE html>
   <html lang="en" ng-app="axelor.app" ng-controller="AppCtrl" ng-cloak>
  
positive.code:                 </ul>
                </li>
              </ul>
            </div>
          </div>
        </div>
  
negative.code:     <!-- JavaScript at the bottom for fast page loading -->
      <script src="js/messages.js"></script>
      <x:script src="js/application.js"/>
      <% if (extraFoot != null) { %> <jsp:include page="<%= extraFoot %>" /> <% } %>
    </body>
  </html>
  