Profile Page Styling

## Feature Implementation
- Profile Page Styles
- Devise Registrations Controller override
- Feature Spec for User Profile
So the profile page should never allow the user to change the `first_name` and `last_name` attributes. Simply put, it should only display what the User attributes are after it has been authenticated via Venmo?

If so, then the assumption is that they can't change anything at all inside of Wager, and that any changes should be made via Venmo. I'll change this over the weekend.