Returnable products

Suggestion for flag on product to state whether that product is returnable or not.  Our products are services and thus not returnable.  Eventually we will want to include some products that are returnable, so the ability to return some products and not others would be very helpful.

Thanks a lot for suggestion. Please find this work item here

Done. Please see this commit

Thank you so much, for this and the nopCommerce product overall.