Fluent of the Navigator...

Fluent of the Navigator... (Initial implementation of fluent API for one-to-many relationships)

This is the basic initial implementation of the OneToMany method discussed in the last design meeting. It will create one or both nav props and then associate them with an FK, which is created if necessary.
Will change. (I was doing the compare differently in an earlier iteration and then didn't remove the ToUpperInvariant.)