<div class="btn-group">
   <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
      Load preset <span class="caret"></span>
   </button>
   <ul class="dropdown-menu">
      <li class="loadopenfmri"><a href="#">Load OpenfMRI</a></li>
      <li class="loadfreesurfer"><a href="#">Load FreeSurfer</a></li>
      <li class="loadmorpho"><a href="#">Load Morphologist</a></li>
      <li class="loadjson"><a href="#">Load from {{jsonfile}}</a></li>
      <li class="reset"><a href="#">Reset rules</a></li>
   </ul>
</div>
