Bug 11868: MTT: disable SMS and phone if not in use

Bug 11868: MTT: disable SMS and phone if not in use

On both pages "Notices and slips" and "Overdue rules", it would be great
to disable SMS and phone if there are not in use.  This patch implements
this.

Test plan:
1/ Edit a notice
2/ Enable/disable the SMSSendDriver pref and verify the sms block is
enabled/disabled.
3/ Enable/disable the TalkingTechItivaPhoneNotification pref and verify
the phone block is enabled/disabled.

4/ Go on tools/overdues.pl
5/ Enable/disable the SMSSendDriver pref and verify the sms checkboxes
are enabled/disabled.
6/ Enable/disable the TalkingTechItivaPhoneNotification pref and verify
the phone checkboxes are enabled/disabled.

Signed-off-by: Olli-Antti Kivilahti <olli-antti.kivilahti@jns.fi>
---------------
Testing report:
---------------
Followed the test plan. Reviewed the code modifications.
Feature works as expected.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>