barcode window always on top

voting-booth-gui/src/main/java/meerkat/voting/gui/panels/vote_have_been_cast/VoteHaveBeenCastController.java

@@ -63,6 +63,7 @@ public class VoteHaveBeenCastController extends TwoWayNode {
         BufferedImage bi = ImageIO.read(new File(filename));
         frame.add(new JLabel(new ImageIcon(bi)));
         frame.pack();
+        frame.setAlwaysOnTop(true);
         frame.setLocationRelativeTo(null);
         frame.setVisible(true);
     }