Show new badge next to new countries on travel stats page.

templates/trip/stats.html

@@ -27,7 +27,12 @@
     <div>Conferences in {{ year }}: {{ year_stats.conferences }}</div>
     <div>{{ countries | count }} countries visited in {{ year }}:
       {% for c in countries %}
-      <span class="text-nowrap">{{ c.flag }} {{ c.name }}</span>
+        <span class="text-nowrap border border-2 px-2 my-3 mx-1">
+          {{ c.flag }} {{ c.name }} ({{ c.alpha_2 }})
+          {% if c.alpha_2 not in previously_visited %}
+            <span class="badge text-bg-info">new</span>
+          {% endif %}
+        </span>
       {% endfor %}
       </div>
     <div>

web_view.py

@@ -580,6 +580,7 @@ def trip_stats() -> str:
         distances_by_transport_type=sum_distances_by_transport_type(trip_list),
         yearly_stats=yearly_stats,
         conferences=conferences,
+        previously_visited=app.config.get("PREVIOUSLY_VISITED", set),
     )