Bug 32655: Move phone and itiva variables into templates

Bug 32655: Move phone and itiva variables into templates

To test:
1. Go to a patron record or create a new one.
2. Toggle the 'Patron messaging preferences' fieldset so it is hidden.
3. Notice the variables.
4. Apply patch
5. Try steps 1 & 2 again, no varibales.
6. Attempt to toggle on/off options for email/sms. When email/sms are off the digest option next to it should be disabled.
7. Go to  Administration > Patron categories and try step 6 there as well.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>