title: Adding extra HTML tags and attributes to Django crispy-forms fields
body: <p>I'm using django-crispy-forms with Bootstrap and I'm wanting to add some extra HTML <strong>inside</strong> the HTML rendered for the a single field.</p>
  
  <p>For example if my form contains,</p>
  
  <pre><code>recipients = forms.CharField(label='To',widget=forms.TextInput(
      attrs={'placeholder': 'Enter phone number, contact or group (add as many as you like)'}))
  </code></pre>
  
  <p>Then the normal rendering (using the Bootstrap templates) is,</p>
  
  <pre><code>&lt;div id="div_id_recipients" class="control-group"&gt;
      &lt;label for="id_recipients" class="control-label requiredField"&gt;
           To&lt;span class="asteriskField"&gt;*&lt;/span&gt;
      &lt;/label&gt;
      &lt;div class="controls"&gt;
           &lt;input class="textinput textInput" id="id_recipients" name="recipients" placeholder="Enter phone number, contact or group (add as many as you like)" type="text"&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>What I want to do is have some extra HTML appear just before the final closing div. So it would look like, </p>
  
  <pre><code>&lt;div id="div_id_recipients" class="control-group"&gt;
      &lt;label for="id_recipients" class="control-label requiredField"&gt;
           To&lt;span class="asteriskField"&gt;*&lt;/span&gt;
      &lt;/label&gt;
      &lt;div class="controls"&gt;
           &lt;input class="textinput textInput" id="id_recipients" name="recipients" placeholder="Enter phone number, contact or group (add as many as you like)" type="text"&gt;
      &lt;/div&gt;
  
      &lt;div class="controls-aside"&gt;
           &lt;button type="button" class="btn"&gt;Address Book&lt;/button&gt;
           &lt;button type="button" class="btn"&gt;Add Contact&lt;/button&gt;
      &lt;/div&gt;
  
  &lt;/div&gt;
  </code></pre>
  
  <p>I know that I can replace the existing template for this field with a custom template but I want to be able to re-use their template without doing a copy/paste since that makes it not very maintainable.</p>
  
  <p>So what is the best way to implement this? I also want to add an extra class to the <strong>label</strong> if anyone can suggest how to do it?</p>