title: backbone.js - handling if a user is logged in or not
body: <p>Firstly, should the static page that is served for the app be the login page?</p>
  
  <p>Secondly, my server side code is fine (it won't give any data that the user shouldn't be able to see). But how do I make my app know that if the user is not logged in, to go back to a login form?</p>