Profile Page Styling

## Feature Implementation
- Profile Page Styles
- Devise Registrations Controller override
- Feature Spec for User Profile
If users won't be allowed to change their attributes, and should only be displaying the Venmo authentication details (phone_number, name, etc), then I will be stripping out the Devise RegistrationsController override. I mistakenly assumed that they could be changing some of their attributes on the Wager side.