Put tabs at the bottom

There is way to much visual clutter at the top already, with the location
bars and toolbars.

src/nautilus-notebook.c

@@ -241,6 +241,7 @@ nautilus_notebook_init (NautilusNotebook *notebook)
 	gtk_notebook_set_scrollable (GTK_NOTEBOOK (notebook), TRUE);
 	gtk_notebook_set_show_border (GTK_NOTEBOOK (notebook), FALSE);
 	gtk_notebook_set_show_tabs (GTK_NOTEBOOK (notebook), FALSE);
+	gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_BOTTOM);
 
 	g_signal_connect (notebook, "button-press-event",
 			  (GCallback)button_press_cb, NULL);