Bug 23841: Add link to bibliographic details page in item details breadcrumbs

Bug 23841: Add link to bibliographic details page in item details breadcrumbs

This patch adds a link to the default bibliographic details page from
the breadcrumbs menu on the item details page.

The patch also makes a minor update to staff client CSS to allow for use
of biblio-default-view.inc to generate the link and have it styled
correctly.

To test, apply the patch and update the staff client CSS
(https://wiki.koha-community.org/wiki/Working_with_SCSS_in_the_OPAC_and_staff_client).

Locate an record in the catalog and view the item details page. Verify
that the breadcrumbs menu includes a link back to the bibliographic
details page as defined in the IntranetBiblioDefaultView system
preference.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>