Put selection toolbar in the right place in the UI
Put selection toolbar in the right place in the UI

The selection toolbar is over the CollectionView which is in
below_bin, so put the toolbar there too. Without this the
selection toolbar is centered over the area to the right of the
sidebar, rather than over the whole icon view.

https://bugzilla.gnome.org/show_bug.cgi?id=678960

vbenes/gnome-boxes,vbenes/gnome-boxes