Bug 36113: Adjust default RENEWAL notice template to use TT

Bug 36113: Adjust default RENEWAL notice template to use TT

Test plan:
1. Apply patch
2. reset_all (or start your testing environment in the first place)
3. Enable the system preference RenewalSendNotice
4. Check an item out to a patron
5. Edit that patron:
    a. Enter a value for Primary email
    b. Set messaging preference to enable email notices for Item
       checkout and renewal
6. Renew the checked-out item
7. Check the patron's Notices tab for the Item renewal notice, and
   confirm that the notice is correct

Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>