Help link

* adds help link

templates/footer.html

@@ -3,7 +3,7 @@
     <div class="container">
         <div class="d-flex justify-content-center">
             <span class="col-sm-auto footer-link">
-                <a href="{% url 'home' %}">{% trans 'Help' %}</a>
+                <a href="{{ help_link }}" target="_blank">{% trans 'Help' %}</a>
             </span>
             <span class="col-sm-auto footer-link">
                 <a href="{% url 'home' %}">{% trans 'Impressum' %}</a>