title: Parse Database not cleared on logout Android
body: <p>As the question says, I'm having a problem when logging out from parse. If I login to another account, the old data is still in the DB. 
  My question is, do I need to clear it manually ? I mean, calling ParseObject.unpinAll() ?</p>
  
  <p>FYI, the app doesn't have the user annonymous enabled. (I think it's disabled by default, right ?)</p>
  
  <p>What approach should I take?</p>
  
  <p>Thanks</p>