title: django-registration: how do I check whether the user is logged in before displaying a page
body: <p>I followed <a href="http://www.michelepasin.org/blog/2011/01/14/setting-up-django-registration/" rel="noreferrer">this page</a> to set up a django registration site. It's pretty awesome, and registration and authentication are nicely wrapped. </p>
  
  <p>But, it doesn't show me, how do I check if a user is logged in, who this user is, before displaying a webpage? and how do I direct the user to a new page after logged in? </p>
  
  <p>Thanks! </p>