Fix association to point to right objects
Fix association to point to right objects

Having payment methods point to themselves doesn't really help any.
Let's actually point the association at the object it should point to.

jordan-brough/solidus,pervino/solidus,pervino/solidus,jordan-brough/solidus,Arpsara/solidus,Arpsara/solidus,pervino/solidus,Arpsara/solidus,jordan-brough/solidus,jordan-brough/solidus,pervino/solidus,Arpsara/solidus