add notification permission status

www/BluememeUtils.js

@@ -81,6 +81,10 @@ var api = {
         call('requestPushPermission', [], success, error);
     },
 
+    getPushPermissionStatus: function (success, error) {
+        call('getPushPermissionStatus', [], success, error);
+    },
+
     getFirebaseToken: function (success, error) {
         call('getFirebaseToken', [], success, error);
     },