* Fix product report data issue when issuing item refund
* Modify product order lookup stats when refund is given
* Remove products where orders are refunded
* Remove unused var and add comment about early return
* Reduce product revenue if quantity still remains after refund
* Fix subtotal array key and abs value for float
* Change product_gross_revenue to product_net_revenue
* Change product_gross_revenue to product_net_revenue
* Change product_gross_revenue to product_net_revenue in category data store
* Change to net_revenue in frontend category report
If order is updated while save_post action is in progress, then the update does not trigger stats table update, thus stats table gets out of sync with master data.
Joshua T Flowers
Peter Fabian
Paul Sealock
Jonathan Belcher
Claudio Sanches