Store > Add > Regions > Select or Add

Finalized the part about either selecting or adding a new region. Needs validation to make sure that duplicates are rejected but the ID is associated with the entry.

 Changes to be committed:
	modified:   app/controllers/stores_controller.rb
	modified:   app/models/store.rb
	modified:   app/views/stores/new.html.erb
Store > Add > Regions Finalized

Finalized the setup for of regions in the add form along with validations.

 Changes to be committed:
	modified:   app/controllers/stores_controller.rb
	modified:   app/models/region.rb
	modified:   app/models/store.rb
	modified:   app/views/stores/new.html.erb
	new file:   db/migrate/20141214054033_remove_store_defaults.rb