Fixed #16965 -- Clarified Formset can_delete docs.

Default: ``False``

Lets you create a formset with the ability to delete::

Lets you create a formset with the ability to select forms for deletion::

    >>> from django.forms.formsets import formset_factory

    >>> from myapp.forms import ArticleForm

    >>> [form.cleaned_data for form in formset.deleted_forms]

    [{'DELETE': True, 'pub_date': datetime.date(2008, 5, 10), 'title': u'Article #1'}]

If you are using a :class:`ModelFormSet<django.forms.models.BaseModelFormSet>`,

model instances for deleted forms will be deleted when you call

``formset.save()``. On the other hand, if you are using a plain ``FormSet``,

it's up to you to handle ``formset.deleted_forms``, perhaps in your formset's

``save()`` method, as there's no general notion of what it means to delete a

form.

Adding additional fields to a formset

-------------------------------------

    </form>

Similarly, if the formset has the ability to order (``can_order=True``), it is possible to render it

with ``{{ form.ORDER }}``.

Similarly, if the formset has the ability to order (``can_order=True``), it is

possible to render it with ``{{ form.ORDER }}``.

Using more than one formset in a view

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~