TodoLite crashing when losing authentication

[sethrosetter]

1. Create user and login
2. Add a few docs, make sure pointing at a running sync_gateway.
3. Take db offline

curl -X POST http://localhost:4985/todos/_offline

1. Add a few docs
2. Bring db online

curl -X POST http://localhost:4985/todos/_online

User will get logged out and the app will crash

https://gist.github.com/sethrosetter/c08eb2453c68b8b52533