Moved Leaderboard -> LegacyLeaderboard
* Going to design a new system
Added new leaderboard system:
* Use the leaderboard create command, and then right click a sign
* No names are needed anymore
* Leaderboards can be edited with leaderboard edit command and the
changes applied by right clicking the leaderboard sign
* Leaderboards are removed by destroying the main sign on the board
Clicking a sign to create or edit a leaderboard now cancels the event
* You now need to have the mobhunting.leaderboard permisison to remove
the leaderboard
Clicking on a leaderboard sign now shows the contents of the sign in
chat in case the name is truncated
* Changed the main leaderboards sign formatting
Leaderboards can now replace normal replaceable materials
Stats with 0 amounts are no longer shown on the new leaderboards
Leaderboards can now have multiple stat types and time periods and will
cycle through them each update
Updated minigames compat for minigames 1.6 and up