Added recalculation of the quantity of goods in stock when changing the status of the order in the statistics of sales.

Added recalculation of the quantity of goods in stock when changing the status of the order in the statistics of sales. To enable this option, go to the settings, in the "Shop" tab. Automatic recalculation of availability can be enabled both when placing an order, and when changing the status of an order. The balance conversion parameter in the sales statistics is displayed if the order status is «Processed» or «Processed and successfully completed».