Make data per-server

[Protryon]

Presently, data like smelting/tools/crafting recipes are global. They should be loaded for each server.

[n0toose]

Would the creation of a .json file (and a parser) be acceptable enough?

[Protryon]

At the moment, we have a set of json files and parsers for them. The issue is that, say, one basin instance hosted two independent Minecraft worlds, each one might want different items/blocks/etc.
This isn't particularly a high priority, as I don't know if anyone would ever want to run multiple servers within one instance.