/**
  * deletes a page from the manifest
  *
  * @param nodeID
  */
 private void deletePage(final String identifier, final boolean deleteResource) {
   if (identifier.equals("")) {
     // no page selected
   } else {
     final CPManager cpMgm = CPManager.getInstance();
     final String path = treeModel.getPath(identifier);
     treeCtr.removePath(path);
     cpMgm.removeElement(cp, identifier, deleteResource);
     cpMgm.writeToFile(cp);
   }
 }