add timestamp macro

app/templates/common/macros.html

@@ -38,3 +38,7 @@
   </span>
 </div>
 {% endmacro %}
+
+{% macro timestamp(unix_ts) %}
+<span class="timestamp" data-utc="{{ unix_ts }}">{{ unix_ts | ts_datetime('%Y-%m-%d %H:%M')}} ST</span>
+{% endmacro %}