PH & TM - Rails Forms and Associations - Paired assignment - Week 5

A marathon of coding that has all but the Orders epic complete. It's not pretty, but it's pretty functional.
So, this same sequence is, by necessity, repeated in a lot of places. I created a convenience method, name, in the User model (user.rb) that would just yield the first and last name as one. Thence, I could call `@user.name` or `user.name` as needed. Also, considering the frequency with which `@address.user` appears here, you might consider adding `@user = @address.user` to the controller that use this (at most, show, new, and edit).