Switch to side-by-side view

--- a/GUI/volumewidget/vw.cpp
+++ b/GUI/volumewidget/vw.cpp
@@ -74,7 +74,7 @@
     if (argc > 0)
         Usage();
 
-    VolumeWidget w(50, false);
+    VolumeWidget w;
     w.show();
     return app.exec();
 }