Bug 18501: (QA follow-up) Migrate and update unit tests
This patch moves the _FixAccountForLostAndFound tests from Circulation.t
to Koha/Items.t and updates then to call an item store as aposed to the
now removed _FixAccountForLostAndFound method.
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>