Pathology referral form registration doesn't validate RNA later time

[Nicklas Nordborg]

Entering a date but no time for RNA later doesn't perform correct validation. In this case, the result should be: 'Not a valid time', but the validation doesn't work and the console display: ReferenceError: setInputStatus is not defined

Entering a valid time doesn't get rid of the problem since it seems like the validation code is not attached to the time field.

Workaround is to enter a valid date and time and then go back to the date field to re-trigger a validation.

[Nicklas Nordborg]

(In [2737]) Fixes #643: Pathology referral form registration doesn't validate RNA later time