Only show desktop notifications for error/warn feedback messages

src/converse-notification.js

@@ -195,12 +195,14 @@
             };
 
             converse.showFeedbackNotification = function (data) {
+                if (data.klass === 'error' || data.klass === 'warn') {
                     var n = new Notification(data.subject, {
                             body: data.message,
                             lang: converse.i18n.locale_data.converse[""].lang,
                             icon: 'logo/conversejs.png'
                         });
                     setTimeout(n.close.bind(n), 5000);
+                }
             };
 
             converse.handleChatStateNotification = function (evt, contact) {