Added PNG versions of the MCServer icon.

Extracted from the icon.ico, these are to be used for logos, avatars etc.
Ignoring all items beginning with "world".

This is so that multiple worlds can exists without having to ignore each of them - simply name each worldSomething
Player eating is now properly broadcast to other players.

Also fixed the API relating to food, determining player gamemode, and removed several unneeded API functions.