Bug 5782: Add warning when ordering a duplicate record from external source
Enhancement for Acquisitions/ordering from external source.
Koha already checked for duplicates, but this patch warns the user. Offers the choice to use existing record, use new record or return without making an order.
The new template is added for this interaction with the user.
Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com> Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>