#11: include supervisor info in case_confirmed_sick notifications
Save and sync negative answers to the "are you sick?" call.
Changed labels for follow up info in case list
 #11: Case update API interprets verboice call response codes

Taken from API controller doc:

"We use these codes instead of boolean values to simplify
interaction with Verboice (the only current method of
recollection of follow up information).

Ideally, Verboice would be in charge of interpreting the
values entered by the user."