Bug 9543 - Show patrons messaging subscription on holds notification

Bug 9543 - Show patrons messaging subscription on holds notification

Display an information about a patron's messaging preferences if an item
is checked in where the patron has put a hold.

To test:

- Apply patch
- Make sure that SMS driver and TalkingTech sysprefs are defined to
  enable SMS and Phone preferences for users (SMS driver can be a dummy
  value)
- Place a hold for a patron
- Set patron's messaging preferences to different choices (including none)
- Check in the item that is on hold (it has not to be checked out for the
  test
- Verify that below the message "Hold found (item is already waiting") an
  information appears about the patron's messaging preferences.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Chris Kirby <christopherlawrencekirby@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>