Hey guys, quick UberItems update here that I think you all will really like!

- Added an item and material blacklist option to the config (delete your config and make a new one!)
- Removed crashes from leaving the config sorting blacklist / whitelist fields, and prefix field blank
- Made UberItems reload items and materials alongside config and language file from /uber reload command, to assist using the blacklist
- Updated the javadocs on my website