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/block/misc/BlockSkyCompass.java

@@ -46,7 +46,7 @@ public class BlockSkyCompass extends AEBaseTileBlock implements ICustomCollision
 	{
 		super( Material.iron );
 		this.setTileEntity( TileSkyCompass.class );
-		this.isOpaque = this.isFullSize = false;
+		this.setOpaque( this.setFullSize( false ) );
 		this.lightOpacity = 0;
 		this.setFeature( EnumSet.of( AEFeature.MeteoriteCompass ) );
 	}