Split factories from chouette_2_factories.rb
Created by: teddywing
Split out all the factories defined in this file into their own separate files. This helps to make our factories more consistent, so we don't have a bunch of newer factories in their own files and another bunch of factories from the early days (presumably) of the application, which are defined in a single file.
This came about because I was looking for a Referential factory, and was surprised to not see one defined. Then Xin showed me this grouped factory file, and I saw that it actually does exist. With this change, the factories will better match expectations.