Added ModPE.selectLevel method for loading more worlds; removed a few bl_-prefixes; fixed the error concerning invalid prototype on a header
Merge remote-tracking branch 'mrarm/master'

Conflicts:
	src/net/zhuoweizhang/mcpelauncher/ScriptManager.java
Stop the compiler from complaining on a few ModPE script native methods
Moved almost all nonstandard methods out of the top-level package and into the namespaces.
Fixed creation of food items from ModPE.
ModPE Scripts: added ability to exit to title screen and begun to add ability to connect to server