proxadmin/app/templates/admin/admin_tasks.html

  <div class="col-md-12">                                                 
  <div class="panel panel-warning" id="prxadmin">                         
  <div class="panel-heading">Admin Pages</div>                            
  <div class="panel-body">
    <button class="btn btn-default" onclick="window.open('{{ url_for('admin.list_users') }}','_self')"><span class="glyphicon glyphicon-user" aria-hidden="true"></span> Users List</button>
    <button class="btn btn-default" onclick="window.open('{{ url_for('admin.list_items') }}','_self')"><span class="glyphicon glyphicon-list" aria-hidden="true"></span> Items List</button>
    <button class="btn btn-default" onclick="window.open('{{ url_for('admin.list_transactions') }}','_self')"><span class="glyphicon glyphicon-usd" aria-hidden="true"></span> Transaction List</button>
  </div>
  </div>
  </div>