Fixed case sensitive bug

The references to some files were case insensitive, causing the Linux
version of the server to throw a io.FileNotFoundException.
Added compiled version of Item.class

see title
Fixed saving bug

More case-sensitive bugs.
Fixed saving bug 2: Fix harder

Fix it fix it fix it fix it
Fixed saving bug 3: Electric Boogaloo

- Updated the shell script to give java permissions to save player data
- Changed the save location to conform with Linux's case sensitive
environment
- Compiled the server
Merge pull request #2 from Figglewatts/master

Fixed a lot of bugs