Use Gtk.HScale with GTK+2 instead of Gtk.Scale
Use Gtk.HScale with GTK+2 instead of Gtk.Scale

Fixes: https://bugs.launchpad.net/midori/+bug/1026945


dokidokivisual/midori,dokidokivisual/midori,dokidokivisual/midori,dokidokivisual/midori,dokidokivisual/midori