/**
  * Validate and save changes to user's contact info.
  * @param $args array
  * @param $request PKPRequest
  * @return JSONMessage JSON-formatted response
  */
 function saveContact($args, $request)
 {
     $this->setupTemplate($request);
     import('lib.pkp.classes.user.form.ContactForm');
     $contactForm = new ContactForm($request->getUser());
     $contactForm->readInputData();
     if ($contactForm->validate()) {
         $contactForm->execute($request);
         return new JSONMessage(true);
     }
     return new JSONMessage(false, $contactForm->fetch($request));
 }