How to hide a property (CustomerID_OLD) from client while keeping accessible on server.
See S.O. comment: http://stackoverflow.com/questions/16275184/how-can-i-tell-breeze-to-completely-ignore-a-property-from-a-code-first-generate/16314379#16314379
Other cleanups that we should keep even if we decide to roll back NorthwindMetadataContext.