refactor counter

counter/templates/counter/activity.jinja

@@ -14,9 +14,8 @@
         {% if counter.type == 'BAR' %}
             <h4>{% trans %}Barmen list{% endtrans %}</h4>
             <ul>
-                {% set barmans_list = counter.get_barmen_list() %}
-                {% if barmans_list | length > 0 %}
-                    {% for b in barmans_list %}
+                {% if counter.barmen_list | length > 0 %}
+                    {% for b in counter.barmen_list %}
                         <li>{{ user_profile_link(b) }}</li>
                     {% endfor %}
                 {% else %}