Make an "Add To Inventory" Field and an "Inventory Admin History" Popup on the Product Inventory Tab

When we receive inventory it would be great to have an Add To Inventory field on the product inventory tab so we can enter the quantity of products that we received instead of having to do math and add it to the On Hand Quantity field. We feel that this would lead to higher inventory accuracy by eliminating the need to do math when receiving inventory.

Also, it would be great if there was an Inventory Admin History popup on the product inventory tab so we could see which user added or subtracted inventory and when it was done. This would help us to see if we already added inventory of a product, see when we last received inventory of a product, and see who added or subtracted an incorrect quantity of a product.

We would prefer to see both of these features added, however, if for technical reasons only one of these features could be added that would be great also.