<tr>
    <td><a href="#!security(user);username.${assignee}">${assignee}</a></td>
    <td>&nbsp;<button class="btn_deassign_user btn btn-sm btn-danger" style="margin-right: 15px; height: 32px; font-size: 13px; float: right;" todo="${todo_id}" user="${assignee_id}"><span class="glyphicon glyphicon-remove-sign" aria-hidden="true"></span></button></td>
</tr>