Detect old-style order refunds

In the `Spree::Order#has_non_reimbursement_related_refunds?` method.

The old style was not migrated due to not enough information being stored and because of potential ambiguities, but we still need to account for it here.

Conflicts:
	core/app/models/spree/payment.rb

Cherry-picked from c0c2ff82a597e5c9f7688d6f871b1e3f744d589a in spree master

Closes #96