o added a GtkVBox intead of a GladeDesignLayout to pack multiple layout/toplevels
    o add/remove widgets from layout on GladeProject add-widget and remove-widget signals

  * gladeui/glade-design-layout.c: draw widget name next to layout frame.

  * gladeui/glade-widget.c: comented code in glade_widget_hide() that was crashing because
    glade_design_view_get_layout() always returns NULL in this hack.