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/GuiTabButton.java

@@ -35,7 +35,7 @@ public class GuiTabButton extends GuiButton implements ITooltip
 {
 	private final RenderItem itemRenderer;
 	private final String message;
-	public int hideEdge = 0;
+	private int hideEdge = 0;
 	private int myIcon = -1;
 	private ItemStack myItem;
 
@@ -150,4 +150,14 @@ public class GuiTabButton extends GuiButton implements ITooltip
 	{
 		return this.visible;
 	}
+
+	public int getHideEdge()
+	{
+		return this.hideEdge;
+	}
+
+	public void setHideEdge( final int hideEdge )
+	{
+		this.hideEdge = hideEdge;
+	}
 }