Logout errors

[ghost]

sometimes when i try log out pump.io the server return a error and is impossible close session, I need to clear localStorage and session manually from browser console, this is more easy to reproduce when register with a email and before confirmation.

High level test cases:

• Go to pump.io instance with 'requireEmail' true
• Register new user
• Show email confirmation instructions
• Log In before confirm email
• Confirm you email
• Try to Log out
• Observe the result

Expected behavior: Close session although exist server error by missing params or wrong/expired credentials

[ghost]

I think is related with: #1181 and #1211