Migrate to ember 2.7 + correct jquery null context error + declare shim for popcorn (instead of silencing the JSHint error)
<ul>
<li {{ action 'display' 'notice'}} class="{{if (eq player.window 'notice') 'active'}}">Notice</li>
{{#if player.transcript}}
<li {{ action 'display' 'transcript'}} class="{{if (eq player.window 'transcript') 'active'}}">Transcript</li>
{{/if}}
{{#if player.model.video}}
<li {{ action 'display' 'video'}} class="{{if player.videoscreen 'active'}}">Video</li>
{{/if}}
</ul>