Closes #386 - Disable phonebook on FFOS packaged

app/js/services.js

@@ -331,6 +331,7 @@ angular.module('myApp.services', [])
   }
 
   function isAvailable () {
+    if (Config.Navigator.ffos && Config.Modes.packed) {
       try {
         return navigator.mozContacts && navigator.mozContacts.getAll;
       } catch (e) {
@@ -338,6 +339,8 @@ angular.module('myApp.services', [])
         return false;
       }
     }
+    return false;
+  }
 
   function openPhonebookImport () {
     return $modal.open({