Rewrote some Command classes.
- SetWorldDefault, for example.

Moved some methods over to Util classes.

Renamed Helper to BooleanValuesUtils.

Added lots more localisations.
- Including ability to format
- Could be improved with %1$s %2$s perhaps
- Moved over lots of messages to the new system

Added debug option.
- Allows you to configure if debug messages are shown
- A command may be added to change the configuration value