track settings changes via events

main.js

@@ -148,13 +148,14 @@ $(document).ready(function () {
 
                 // if notifications are enabled, or wasn't set, check the notifications checkbox
                 chrome.storage.local.get('update_notify', function (result) {
-                    if (result.update_notify === 'undefined' || result.update_notify) {
+                    if (typeof result.update_notify === 'undefined' || result.update_notify) {
                         $('div.notifications input').prop('checked', true);
                     }
                 });
 
                 $('div.notifications input').change(function () {
                     var check = $(this).is(':checked');
+                    googleAnalytics.sendEvent('Settings', 'Notifications', check);
 
                     chrome.storage.local.set({'update_notify': check});
                 });
@@ -165,8 +166,9 @@ $(document).ready(function () {
                 }
 
                 $('div.statistics input').change(function () {
-                    var result = $(this).is(':checked');
-                    googleAnalyticsConfig.setTrackingPermitted(result);
+                    var check = $(this).is(':checked');
+                    googleAnalytics.sendEvent('Settings', 'GoogleAnalytics', check);
+                    googleAnalyticsConfig.setTrackingPermitted(check);
                 });
 
                 function close_and_cleanup(e) {