Bug 11867: MTT: Manage *_PHONE notices

Bug 11867: MTT: Manage *_PHONE notices

The *_PHONE notices (HOLD_PHONE, PREDUE_PHONE and OVERDUE_PHONE) should
be "merged" into the main code (i.e. HOLD, PREDUE and OVERDUE).

Test plan:
1/ Make sure you have HOLD_PHONE, PREDUE_PHONE and OVERDUE_PHONE notices
2/ Execute the update DB entry
3/ Verify the 3 notices have been merged into "phone" template of the
HOLD, PREDUE and OVERDUE notices
4/ Verify there is no regression in the Talking Tech feature (how?)

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
No koha-qa errors

Verified that notices are merged
TalkingTech_itiva_outbound.pl runs without problem... but can't produce
any output, may be not correctly configured (my setup), no warnings
nor log messages

Signed-off-by: Galen Charlton <gmc@esilibrary.com>