Set registration as complete option from registrations page

That's a little confusing to me then. $scope.submit seemingly builds an array of answers to save here:
````javascript
      angular.forEach($scope.adminEditRegistration.answers, function(a){
        if(!angular.equals(a, _.find(registrant.answers, { 'id': a.id }))){
          answersToUpdate.push(a);
        }
      });
````

If it's just going to be one answer, then why make it an array?