We should use effective_itemtype instead of itype to take
the item-level_itypes pref into account.
Note that we should not need to test for the existence of the key as we
now assume that item types are correctly set to a valid item type.
Signed-off-by: Liz Rea <wizzyrea@gmail.com> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org> Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>