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/client/gui/widgets/GuiNumberBox.java

@@ -26,7 +26,7 @@ import net.minecraft.client.gui.GuiTextField;
 public class GuiNumberBox extends GuiTextField
 {
 
-	final Class type;
+	private final Class type;
 
 	public GuiNumberBox( final FontRenderer fontRenderer, final int x, final int y, final int width, final int height, final Class type )
 	{