Fixed #10082 -- Modified BaseFormSet so that ordering checks work when the...

                # don't add data marked for deletion to self.ordered_data

                if self.can_delete and form.cleaned_data[DELETION_FIELD_NAME]:

                    continue

                self._ordering.append((i, form.cleaned_data[ORDERING_FIELD_NAME]))

            # After we're done populating self._ordering, sort it.

            # A sort function to order things numerically ascending, but

            # None should be sorted below anything else. Allowing None as

            # a comparison value makes it so we can leave ordering fields

                if y[1] is None:

                    return -1

                return x[1] - y[1]

                self._ordering.append((i, form.cleaned_data[ORDERING_FIELD_NAME]))

            # After we're done populating self._ordering, sort it.

            self._ordering.sort(compare_ordering_values)

        # Return a list of form.cleaned_data dicts in the order spcified by

        # the form data.

{'votes': 500, 'ORDER': None, 'choice': u'The Decemberists'}

{'votes': 50, 'ORDER': None, 'choice': u'Basia Bulat'}

Ordering should work with blank fieldsets.

>>> data = {

...     'choices-TOTAL_FORMS': '3', # the number of forms rendered

...     'choices-INITIAL_FORMS': '0', # the number of forms with initial data

... }

>>> formset = ChoiceFormSet(data, auto_id=False, prefix='choices')

>>> formset.is_valid()

True

>>> for form in formset.ordered_forms:

...    print form.cleaned_data

# FormSets with ordering + deletion ###########################################