Bug 9809: Update AddReserve prototype to remove constraint parameter

Bug 9809: Update AddReserve prototype to remove constraint parameter

Test Plan:
1) Apply this patch set
2) prove t/db_dependent/Circulation.t
3) prove t/db_dependent/Holds.t
4) prove t/db_dependent/Holds/LocalHoldsPriority.t
5) prove t/db_dependent/Holds/RevertWaitingStatus.t
6) prove t/db_dependent/HoldsQueue.t
7) prove t/db_dependent/Reserves.t

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
AMENDED: An else branch in reserve/placerequest.pl was removed. This had
the effect of making it no longer possible to place an any hold in the
staff client.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Verified placing a biblio level and an item level hold.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>