Title: fixed bug for note message, update adapter

Description:
Todo Note messages weren't getting saved when editing an existing
todo because we weren't properly following the data models
and saving them directly. Similarly, the models were being left
in a dirty state after hitting the back button which meant
if you hit back then edited again, you would still see your changes.

Also changed the adapter to persist data in browser storage.

Author: omgoshjosh

web/static/js/application.js

@@ -1,9 +1,5 @@
 window.Todos = Ember.Application.create();
 
-Todos.ApplicationAdapter = DS.FixtureAdapter.extend();
-
-/*
 Todos.ApplicationAdapter = DS.LSAdapter.extend({
   namespace: 'todos-emberjs'
 });
-*/

web/static/js/controllers/todo_controller.js

@@ -18,12 +18,14 @@ Todos.TodoController = Ember.ObjectController.extend({
         todo.save();
     },
     saveTodo: function() {
+      this.get('model').get('notes').get('content').get('content')[0].save();
       this.get('model').save();
 
       // Send the user back to Todos index
       this.transitionToRoute('todos.index');
     },
     resetTodoModel: function(){
+      this.get('model').get('notes').get('content').get('content')[0].rollback();
       this.get('model').rollback();
     }
   },