End-to-end encryption flow bug

[gabrc52]

1. User signs up, and when prompted how to backup their keys, uses the key backup as file
2. User downloads key backup
3. User signs out
4. User logs in, and lost the keys, so they choose to reset their keys
5. This time they choose to use a password
6. When trying to sign out, they get a "You'll lose access to your encrypted messages"
7. They choose to export their keys
8. A message saying the keys were exported
9. User confirms and gets taken to the home page, but they still want to sign out
10. Any subsequent attempts to sign out result in repeating the steps 6-9