-Fixed an unnecessary error message that was being displayed due to the config loading & self-syncing before the coins are registered.
-Updated the item trade buttons visuals and functions to be more consistent and compatible with the new barter trade type.
-Trade item rendering is now handled by the trade button instead of an inventory slot, so some creative interactions will no longer work such as cloning items from the trade displays.
-Added new barter trade type that lets you trade one item for another in an item trader (example: selling a golden apple for 9 gold ingots)
-The trade price screen now disables certain buttons when appropriate, such as restricting purchases on the ticket kiosk, or preventing you from setting a price for barter trades.
-Fixed an issue where the trader would still allow a trader purchase to be made and take coins when there was no room to store the purchased item in the trader.