ove{{$index+1}}"
        ng-click="removeFilter(group, $index+1)"
        ng-disabled="$last && $first">
  <span class="smallicon glyphicon glyphicon-minus"></span>
</button>
<button class="btn btn-default btn-xs"
        name="add{{$index+1}}"
        ng-click="addFilter(group, $index+1)">
  <span class="smallicon glyphicon glyphicon-plus"></span>
</button>
