title: How to have Calendar thing in Django date field
body: <p>I have this Datetime field in Django</p>
  <pre><code>update_date     = models.DateField()
  </code></pre>
  <p>But I want the Calendar to pop up. In docs, they say to write this</p>
  <pre><code>class CalendarWidget(forms.TextInput):
      class Media:
          css = {
              'all': ('pretty.css',)
          }
          js = ('animations.js', 'actions.js')
  </code></pre>
  <p>Now I have a few problems:</p>
  <ol>
  <li>Where to declare this class and how to use it</li>
  <li>I don't have pretty.css , animation.css , how can get it</li>
  <li>Do I need to do programming for it??</li>
  </ol>