disconf/disconf-web/html/unitTpl/leftbar.html.tpl

                            <div class="dropdown" style="margin-top:20px;width:100%">
                                <button class="btn btn-default dropdown-toggle" type="button" id="appDropdownMenu" data-toggle="dropdown" style="width:100%;">
                                    <span id="appDropdownMenuTitle">Apps</span>
                                    <span class="caret"></span>
                                </button>
                                <ul class="dropdown-menu"  id ="applist"  role="menu" aria-labelledby="appDropdownMenu"></ul>
                            </div>
                            
                            <!--envroment list-->
                            <ul id="envChoice" class="nav nav-pills nav-stacked" style="margin-top:20px;">
                            </ul>