Moved config.yml comments in front of the settings they describe.

Permission changes:

• OP's have permission to commands an using the FastCraft+ interface by default.

Language changes:

• Renamed CN to ZH-CN
• Added traditional Chinese (ZH-TW)

Changes to automatic updater:

• Run update checker on separate thread.
• Changed releases.xml url.
• Added debug messages for update checks.

Bug fixes:

• Fixed crafting multiplier going below 1 when shift+right clicking.
• Fixed crafting bookshelves and enchantment tables not awarding achievements.