Remove ant test files again.
Remove now obsolete libraries.
Remove local libraries in favor of centralized GiantCore.
Add new dependency.
Update GiantShop to use centralized libraries from GiantCore instead of local libraries.
Update GiantShop to user newer version of database driver.
Potentially fix bug occurring when world no longer exists but shop region is still defined.
GiantShop is now depending GiantCore to be operational.
Update items.yml to be 1.5.1 compatible.