Add citizens.npc.skin wildcard support

citizens.* and citizens.npc.* now include citizens.npc.skin
Merge pull request #70 from mcmonkey4eva/patch-1

Add citizens.npc.skin wildcard support
Merge pull request #59 from sanjay900/master

1.8 PlayerList fix
Optimise 1.8 playerlist hack
Implement NavigationStuckEvent
Fix NavigationStuckEvent set-null

If you set the action in a NavigationStuckEvent, it throws an NPE rather
than simply doing nothing. This patches that.
It also throws the event even when the default stuck action is null.
Merge pull request #83 from mcmonkey4eva/master

Fix NavigationStuckEvent set-null
Send tablist packet globally
Merge branch 'master' of github.com:CitizensDev/Citizens2