Wrong class on input wrappers

[hron84]

Normal input rendered with this markup:

<div class="clearfix" id="post_video_input">
  <div class="input">
    <input id="post_video" name="post[video]" size="30" type="text" />
  </div>
</div>

Latest Twitter bootstrap requires following markup (I kept current classes too):

<div class="control-group clearfix" id="post_video_input">
  <div class="controls input">
    <input id="post_video" name="post[video]" size="30" type="text" />
  </div>
</div>

Plus, on validation errors .control-group should marked with error class to make input as red.

For details, check latest docs