+ Adjusted the id checking on join for auction items.
+ Removed the old currency system in favour of new one system I use in my other plugins.

That being said, if you are using UltraEconomy you will need to specify that once again in the new economy section.

Search for "default selection" in the config, by default it should be "Vault/Vault", you would now change it to "UltraEconomy/currencyName". ex. "UltraEconomy/Gems"

I've made this change to prepare for multi-currency support.
If you encounter any issues please let me know on the discord.