v1.3.0

Added features:

• Sign support
• Category menu (/ah categories)
• Added cooldown for listing items
• Added sound when an item is sold
• Added permission for maximum listings (auctionhouse.limit.#)

Changes:

• Updated format for listing expire time
• Lang file fixes/changes
• Updated config checker
• Menu item ID's are no longer in lang files
• Expired listings can now be automatically deleted
• Other minor enhancements/bug fixes