Trade & Enchant Overhaul

Fixed overwhelming prices.
Non tradable enchantments can no longer be used with villagers, a message should appear about this.

Prices are now a bit less punishing.
Treasure enchantments now cost double.
Updating enchantments should now work entirely all the time.
Please I need to tester to try this mod in a server environment. To prove if the combining mechanic is working server sided.