title: django no csrftoken in cookie
body: <p>I'm testing to make a POST ajax request and I got a 403 because of no csrftoken. I followed the Document, however, it still doesn't work and I found that the cookie named csrftoken is <strong>empty</strong>, it means <code>$.cookie("csrftoken")</code> <strong>return null</strong>.</p>
  
  <p>Can someone tell me the reason and how to set <code>csrftoken</code> into cookie?</p>