<div ng-show="popupVisible" class="panel panel-default">
    <div class="panel-heading">
        <span class="glyphicon glyphicon-remove pull-right"
          ng-click="popupVisible=false"></span>
        <h3 class="panel-title">{{ feature.get('name') }}</h3>
    </div>
    <div class="panel-body"ng-if="feature.get('website')">
        <a ng-href="{{ feature.get('website') || '' }}">Homepage</a>
    </div>
</div>

<div ng-show="popupVisible" class="panel panel-default">
    <div class="panel-heading">
        <span class="glyphicon glyphicon-remove pull-right"
          ng-click="popupVisible=false"></span>
        <h3 class="panel-title">{{ feature.get('name') }}</h3>
    </div>
    <div class="panel-body">
        <a ng-if="feature.get('website')" ng-href="{{ feature.get('website') || '' }}">Homepage</a>
    </div>
</div>

Hide only website-entry when feature.website is missing
Hide only website-entry when feature.website is missing
