Replaced the "Order total" column in the Order list with "Order final total (gross)"

The Order final total (gross) now replaces the Order total column on the Order list. The displayed Order final total (gross) value matches with the total value of an Order in the Order details and lets you find the Order in the list easily by the total price. It includes all taxes independent of the tax mode used to calculate the gross prices and eliminates confusion previously caused by the Order total value, which was calculated depending on the tax included or excluded from the Line Item prices, and differed from the total value of an Order in the Order details.