Bug 20287: Koha::Object->get_from_storage

Bug 20287: Koha::Object->get_from_storage

May be part of a separate bug report if needed

TODO - add POD + tests

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit 1144ee4b819e01ebad890f562d2754cda8d4e3ad)
(rmaint comment - backported get_from_storage as it's required by new
tests added to bug 21385 - Correctly count all items in basket for
booksellers list)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>