Bug 12556: Simplify and correct logic in holds-table.inc template

Bug 12556: Simplify and correct logic in holds-table.inc template

The states is_waiting and is_found are already implied by
is_at_destination. Also we would never get the 'transfered' html class
since transfer's status is T (this might not have been true in the
past but now is).

Signed-off-by: Timothy Alexis Vass <timothy_alexis.vass@ub.lu.se>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>