Created a dashboard view and controller. Also updated app.js to use states instead of routes. This will make authentication easier (hopefully).
We have authentication! Try signing in with an account in the db and see if you can hit the dashboard!

We should also be saving a cookie to authenticate users later. Next
steps are adding the token from the cookie to each HTTP header so that
we can hit the REST API, and to also create a “Remember Me” checkbox
that extends the life of the cookie.