Issue 64 Genre Vocab Servcie

@kevinreiss  A few things:
 * ActiveRecord wasn't too cool with the Models being in the `PulStore::Lae` namespace and the Controllers being just in the `Lae` namespace, so the controllers have been changed, and put in matching subdirectories. The tests have been similarly adjusted.
 * The routing has been modified so that the URLs are still **exactly** the same.
 * RSpec has problems with namespaced controllers and loading dependencies in the right order. This seems to crop up on SO in a few places. The only controller tests we had were the boilerplate tests  created by `rails scaffold`, and most of the same stuff is covered in request, feature, or routing specs (and this should be continued going forward) so **the controller specs have been removed**.