updated the Notification send_date to use Wordpress current_time()

@@ -219,7 +219,7 @@ function send_triggered_notification($uid,$trigger="NO_TRIGGER",$args = array(),
             $insert = array(
                 'notification_id'   => $nid
               , 'status'            => 'unread'
-              , 'sent_date'         => time()
+              , 'sent_date'         => current_time('timestamp')
               , 'args'              => $args
             );
             if(empty($notices)) {