streams/view/tpl/app_nav.tpl

<a class="navbar-app nav-link{{if $app.active}} active{{/if}}" href="{{$app.url}}" title="{{$app.name}}" >{{if $icon}}<i class="fa fa-fw fa-{{$icon}}"></i>{{else}}<img src="{{$app.photo}}" width="16" height="16" />{{/if}}</a>