Bug 29513: Convert remaining breadcrumbs div blocks into nav

Bug 29513: Convert remaining breadcrumbs div blocks into nav

As per https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=27846#c0,
breadcrumbs should adhere to the WAI-ARIA Authoring Practices. Most Staff
Client template files have already been fixed, but there were a few that
were missed.

This patch fixes that.

Test plan:
1) Apply this patch.
2) Visit these pages in the Staff Client:
   Home > Acquisitions > TestVendor > Basket TestBasket (1) for TestVendor (*)
   Home > Administration > Set library checkin and transfer policy (**)
   Home > Patrons > Merge patron records (***)
   ...and confirm that the breadcrumbs display correctly.

   (*) Can be accessed by creating a test basket for a test vendor
   (**) Can be found under Administration -> Patrons and circulation
   (***) Can be found by trying to merge two Patron records

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>