Add days until column to birthdays table

templates/birthday_list.html

@@ -6,12 +6,22 @@
 <div class="container-fluid mt-2">
   <h1>Birthdays</h1>
   <table class="w-auto table">
+    <thead>
+      <tr>
+        <th class="text-end">Date</th>
+        <th>Event</th>
+        <th class="text-end">Days</th>
+      </tr>
+    </thead>
+    <tbody>
   {% for event in items %}
     <tr>
       <td class="text-end">{{event.as_date.strftime("%a, %d, %b %Y")}}</td>
       <td>{{ event.title }}</td>
+      <td class="text-end">{{ event.delta_days(today) }}</td>
     </tr>
   {% endfor %}
+    </tbody>
   </table>
 </div>
 {% endblock %}