title: Django - AdminDateWidget
body: <p>I'm using Django and the AdminDateWidget in my form. It works fine. But now I've to level up my form.</p>
  
  <p>I need to insert only a range of date with this widget. The range would be limited in the future, this mean I have to remove the possibility of insert a date after today.</p>
  
  <p>Is it possible? This is my form's code. (it's a dynamic form for having always a refreshed date)</p>
  
  <pre><code>class MyForm(forms.Form):
      def __init__(self, name, *args, **kwargs):
          super(FirstStartMiceForm, self).__init__(*args, **kwargs)
          self.fields['insertion_date'] = forms.DateField(widget = widgets.AdminDateWidget(), initial=date.today())
          ...
  </code></pre>
  
  <p>Any ideas?</p>