Enables profile creation

Creates polymorphic association between user and profile (either manager or bartender)

* Removes previous structure which was single profile model for both types of users
* Creates new view for manager and bartender profiles with form partials for each
* Creates models and controllers for manager and bartender profiles
Remember migrations do not go backwards, only forwards. So you will have to make a another migration that accomplishes this task for you.

You can only change a migration in the context of the same branch.