title: Django modelform widget readonly render text not input field
body: <p>I have a modelform with readonly fields that render as a HTML input widget with an ugly 'no-entry' mouseover image (firefox) when the text inside the input box is selected - default behaviour for 'models.TextField' fields to render as input I believe.</p>
  
  <pre><code>self.fields['project_path'].widget.attrs['readonly'] = True
  self.fields['media_path'].widget.attrs['readonly'] = True
  self.fields['responsible'] = SysEventChoiceField(User.objects.all().order_by('first_name'))
  </code></pre>
  
  <p>I want to render the modelform with a mixture of read only fields as pure text without the input boxes in the form. The result should look something like this in html..</p>
  
  <pre><code>&lt;p&gt;D:\This\Path&lt;/p&gt;
  &lt;p&gt;E:\This\other\path&lt;/p&gt;
  &lt;input value="Bob Smith" name="user"&gt;&lt;/input&gt;
  </code></pre>