Fix UUIDManager:

- When uuid or code was lowercase, but the correct name had uppercase,
it would return null even though it wasn't.

Signed-off-by: Staartvin <mijnleraar@msn.com>
Added new language object.

Signed-off-by: Staartvin <mijnleraar@msn.com>
Fix commands when unknown player was specified.

Signed-off-by: Staartvin <mijnleraar@msn.com>