/**
  * Catches and process AJAX save requests
  *
  * @since 1.0
  */
 public function save_ajax_callback()
 {
     check_admin_referer('participad_frontend_nonce');
     $p_post = new Participad_Post('wp_post_id=' . $_POST['post_id']);
     $p_post->sync_wp_ep_content();
     die;
 }