Bug 18072: Add Koha::Biblio->can_be_transferred

Bug 18072: Add Koha::Biblio->can_be_transferred

This patch adds a new method Koha::Biblio->can_be_transferred. The method checks
if at least one of the item of that biblio can be transferred to desired location.

This method will be useful for building a smarter pickup location list for holds,
because we will be able to hide those libraries to which none of the items of
this biblio can be transferred to due to branch transfer limits (see Bug 7614).

To test:
1. prove t/db_dependent/Koha/Biblios.t

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>