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
To make sure I understand what you mean, are you saying that once I merge this pull request I will need to rerun my migrations and run a migration to remove columns and models from master?