Show trip stats in reverse chronological order.

templates/trip/stats.html

@@ -20,7 +20,7 @@
     </div>
   {% endfor %}
 
-  {% for year, year_stats in yearly_stats | dictsort %}
+  {% for year, year_stats in yearly_stats | dictsort(reverse=True) %}
     {% set countries = year_stats.countries | sort(attribute="name") %}
     <h4>{{ year }}</h4>
     <div>Trips in {{ year }}: {{ year_stats.count }}</div>