ambari/ambari-web/app/templates/main/admin.hbs

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<div class="row-fluid">
  <div id="main-admin-menu" class="well span2">
      <ul class="nav nav-list">
        {{#each category in view.categories}}
          {{#view view.NavItemView itemBinding="category.name" elementIdBinding="category.name"}}
              <a href="#" {{action "goToAdmin" category}} >{{category.label}}</a>
          {{/view}}
        {{/each}}
      </ul>
  </div>
  <div class="span10">
    <div class="row-fluid">
      {{outlet}}
    </div>
  </div>
</div>