moved bio, website, webshop, facebook, twitter from apprenticeship to user

the fields are added to the user model but have not been removed from
the apprenticeship model. you need to clean it up if you decide to keep
it this way
Merge pull request #3 from ddgriffin/rubyku/move_bio_to_user

moved bio, website, webshop, facebook, twitter from apprenticeship to us...