In the Diversion module, the "Scheduled Follow-up" field should be optional, not mandatory.

For context, here's why it needs to be optional and not mandatory:

• First and foremost, because there is no option to actually do a follow-up in the Diversion module! This means that every single Diversion has either an "upcoming" follow-up or a "past due" follow-up, and they are flagged as requiring attention, but there's no way to dismiss the alert saying they require attention.

• Second, because not every Diversion requires follow-up. Sometimes a person is diverted by buying them a bus ticket back to their home community, in which case it might be difficult to follow up. And in other cases, it might simply be so clear that you're successful that a follow-up is not needed. Or, if you end up booking them into shelter, then you're going to be working with them in the context of them being a shelter guest and you probably wouldn't want to go back and update the Diversion record.

• Third, because neither the Housing Placement module nor the Housing Loss Prevention module, which seem to be being replicated here, actually require scheduled follow-ups, so it's inconsistent.