Bug 21883: Pass the item to the template

Bug 21883: Pass the item to the template

This patch update the controller to pass a full item object to the
template instead of a subset of item fields and updates the template to
utilise the object.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 00dfcfcbe8c2f974dd3fe0939fcf8a8087c18dbd)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>