title: Remove a user through dashboard, but the user is still logged in?
body: <p>I have created an Appcelerator iPhone app based on Firebase authentication, which works very well. But now I come across some unexpected behaviour.
  My setup is as follows: on app start, the user must login or register. During registration, the account is created, and the corresponding account data (uid, name, email, date etc.) is also stored in a /users/uid data entry.</p>
  
  <p>When I remove a user from Firebase through the Dashboard, by removing it from both /users/uid and the "Login &amp; Auth" tab, it looks all clear. But when the user opens the app, he still remains logged in.</p>
  
  <p>How can I enforce removing a user, where he is also logged out the next time he opens the app?</p>