zAuctionHouse

1. Addition of two new placeholders %zauctionhouse_sellinventory_price% and %zauctionhouse_sellinventory_currency%
2. Fixed a bug with the else buttons that did not work properly in some cases
3. Correction of categories for 1.17

Fixed an error related to the change of material in 1.17

Fixed a minor bug related to the inventory to remove its own item.

Add 1.17 support

Bug fix