Parts display correctly in WAILA

Register an method that can be overidden

Register the same method in the interface

New class that picks the item and displays it to WAILA

Register the new class and call the other class method

Import in PartWailaDataProvider

Fixed errors

Renamed all Display -> Stack

Stuff

src/main/java/appeng/integration/modules/Waila.java

@@ -38,6 +38,7 @@ public class Waila extends BaseModule
 	{
 		final IWailaDataProvider partHost = new PartWailaDataProvider();
 
+		registrar.registerStackProvider( partHost, AEBaseTile.class );
 		registrar.registerBodyProvider( partHost, AEBaseTile.class );
 		registrar.registerNBTProvider( partHost, AEBaseTile.class );