Bug 29007: Add cancellation reason input on check in

Bug 29007: Add cancellation reason input on check in

Test plan:

1) Check an item in with already a confirmed hold
2) Cancel the hold, it was cancelled without possibility to choosing a
   reason
3) Apply this patch and do it again, you must see an input to choose
   your cancellation reason (list from VA)

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>