Reduces visibility of internal fields/methods

Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.

Reduces the visibility of internal methods to private/protected/default when possible.

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

@@ -195,7 +195,7 @@ public class FMP implements IIntegrationModule, IPartFactory, IPartConverter, IF
 				final TMultiPart p = i.next();
 				if( p instanceof CableBusPart )
 				{
-					return ( (CableBusPart) p ).cb;
+					return ( (CableBusPart) p ).getCableBus();
 				}
 			}
 		}