Review required fields and types

[kamicut]

We have received feedback that:

• some fields that are non-required are triggering as required and preventing form submission
• some fields are triggering type errors (e.g number of beneficiaries is asking for a number even though a number is entered)
• draft mode sometimes doesn't work when omitting required fields

We should go over the fields and make sure there aren't any inconsistencies in field requirements
cc @sethvincent @felskia

[kamicut]

I think these are fixed with #124

We could go over all the combination of fields but I think that doesn't scale. We could figure out a minimal test suite that can cover some of the expected behavior. It could be a small or a huge lift but I don't have experience with browser form testing. What do you think @sethvincent?