<ul class="nav navbar-top-links navbar-right">
<li class="dropdown">
    <a class="dropdown-toggle" data-toggle="dropdown" href="" >
        <i class="fa fa-bell fa-fw"></i>   <i class="fa fa-caret-down"></i>
        <span class="badge badge-danger badge-counter" ng-show="numNotifications > 0">{{numNotifications}}</span>
    </a>
        <ul class="dropdown-menu dropdown-aviso">
        <li ng-repeat="notification in notificationData " ng-click="goToNotifications()">
            <div>
                ....
        </li>
        <li>
            <a class="text-center" href="#/">
            <strong>Ir a avisos</strong>
            <i class="fa fa-angle-right"></i>
            </a>
       </li>
    </ul>
</li>