Pooja/Ashwin | #3066 | Adding basic unique id field and corresponding validator.
wip
changing entty question code
Changing headers in submission log
Ashwin/Pooja  | # |Removing references of is_entity_type = reporter.
Ashwin/Pooja | #3066 | Inheriting EntityFormModel from FormModel for subject registration questionnaires
    Pooja/Ashwin | #3066 | Removing entity type usages in questionnaire views.
Pooja/Ashwin | #3066 | Removing redundant method in form model
Pooja/Ashwin | #3066 | Removing is entity type reporter from form model