Add holiday page

Page showing holidays in countries of interest, just in English for now.

templates/holiday_list.html

@@ -0,0 +1,18 @@
+{% extends "base.html" %}
+{% from "macros.html" import display_date %}
+
+{% block content %}
+<div class="container-fluid mt-2">
+  <h1>Holidays</h1>
+  <table class="table table-hover w-auto">
+  {% for item in items %}
+    {% set country = get_country(item.country) %}
+    <tr>
+      <td class="text-end">{{ display_date(item.date) }}</td>
+      <td>{{ country.flag }} {{ country.name }}</td>
+      <td>{{ item.name }}</td>
+    </tr>
+  {% endfor %}
+  </table>
+</div>
+{% endblock %}