MVP: User Auth/Heroku

[briemcnally]

• Users can sign up, sign in, log out
• Users can use a demo to log in to the site
• Users can't use certain feature without logging in (making reservations, reviews, and favorites) [This isn't done yet because I don't have those features yet]
• Pushed to Heroku

[AAlfarho]

Good job on the user auth, a couple of details.

• SIgnup component is not displaying errors while trying to create a user.
• Visiting non-existing routes is not handled yet, accessing /#/not-a-route, should ideally redirect to '/', this is easily done by having a default <Route path="/" ...> at the end of your <Switch>
• Error display could use some styling, it looks like the reset.css is missing some rules for <li>.
  • Current error display:
    
  • What do you think about having something like:
    
• We are not clearing out the errors when we unmount the login/signup components.
  • Login with invalid credentials.
  • Navigate to signup.
  • Navigate back to signup, the error still lingers there.

Assign this issue back to me once the updates addressing these issues are live in Heroku.