add apk download link
<p>{% trans 'Get the c3nav app for Android to see your location on the map.' %}</p>
<p class="app-download-buttons">
<a class="button" href="https://play.google.com/store/apps/details?id=de.c3nav.droid" target="_blank">Google Play</a>
+ <a class="button" href="https://github.com/c3nav/c3nav-android/releases" target="_blank">{% trans 'Download APK' %}</a>
</p>
</section>
<section id="reload-msg">
<div class="app-ads">
<div id="android-app-ad">
<a href="#" class="close"><i class="material-icons">close</i></a>
- <a href="https://play.google.com/store/apps/details?id=de.c3nav.droid">{% trans 'Get the c3nav Android app!' %}</a>
+ {% blocktrans with play_url="https://play.google.com/store/apps/details?id=de.c3nav.droid" apk_url="https://github.com/c3nav/c3nav-android/releases" %}Get the c3nav Android app on <a href="{{ play_url }}" target="_blank">Google Play</a> or <a href="{{ apk_url }}" target="_blank">download the APK!</a>{% endblocktrans %}
</div>
</div>
{% else %}
