title: Does React.js require app to be a single page
body: <p>I am going around React.js and my question is simple: does my app have to be a single page app if I use React?</p>
  
  <p><strong>If no</strong> then how do I control components outside of them? By FLUX? Any other standard methods?</p>
  
  <p><strong>If yes</strong> then are there any libraries to perform permissions/access validation on the client side for React?</p>
  
  <p>Thanks a lot!</p>