<div class="btn-group" >
  <div class="btn-group" >
    <button
      type="button"
      class="btn btn-default"
      ng-model="button"
      ng-disabled="previousDisable"
      title="{{'historic.prevBtn' | translate}}"
      ng-click="previousViewHandler()"
    >
      <span class="glyphicon glyphicon-chevron-left"></span>
    </button>
    <button
      type="button"
      class="btn btn-default"
      ng-disabled="nextDisable"
      title="{{'historic.nextBtn' | translate}}"
      ng-click="nextViewHandler()"
    >
      <span class="glyphicon glyphicon-chevron-right"></span>
    </button>
  </div>
</div>
