After the selection of a shape the shape name is selected in the Navigator
tab under the Drawing Objects entry.

It scrolls to the corresponding entry as well in case the scrollbar is
visible.

Change-Id: I298e8fe6bdab01eb20c53e1730812192c46770c5
Reviewed-on: https://gerrit.libreoffice.org/43566Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tamás Bunth <btomi96@gmail.com>