Bug 15496: (follow-up) Update interaction for deleting records

Bug 15496: (follow-up) Update interaction for deleting records

This patch makes minor changes to markup and JavaScript to alter the
interaction for deleting the record. Now a successful deletion will
convert the dialog to a "message" type dialog and show only the success
message.

To test, apply the patch and test the process of attaching the last item
from a record and deleting that record.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>