Created by: mvastola
Allows for HTML like:
<div class="btn-group-toggle" data-toggle="buttons">
<label class="btn btn-info">
<input name="checkbox" type="hidden" value="0">
<input id="cb" name="checkbox" type="checkbox" value="1" autocomplete="off"> Click Me
</label>
</div>
Fixes #27795 (closed)