Bug 31028: Add acknowledgement notice

Bug 31028: Add acknowledgement notice

This patch adds an acknowledgement notice that will be sent to the opac
user upon submission of a catalog concern report.

Test plan
1) Confirm that a new notice template is added to the notices management
   page.
2) If using a sandbox, check the 'email log' from the management UI to
   see the resultant notice has been 'sent'

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Helen Oliver <HOliver@tavi-port.ac.uk>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>