* Made BentoBoxCommand#setup() "default" and deprecated it
* Undeprecated BentoBoxCommand#setup() and changed its javadoc
* Put back setup in IslandGoCommand and IslandSethomeCommand
* Removed setup in AdminPurgeStatusCommand
Implemented https://github.com/BentoBoxWorld/BentoBox/issues/1072
Moved the various "invalid-value" messages to the admin range node in en-US.
Made AdminRangeSetCommand use the more generic 'must be positive number' message - causes issues with floats, which I will fix later on.