Rename notes to zets

source/_includes/zets/links.html.twig

@@ -0,0 +1,9 @@
+{% if links is not empty %}
+  <h2>Links</h2>
+
+  <ul>
+    {% for url in links %}
+      <li><a href="{{ url }}">{{ url }}</a></li>
+    {% endfor %}
+  </ul>
+{% endif %}

source/_includes/zets/related.html.twig

@@ -0,0 +1,13 @@
+{% if related and zets %}
+  <section>
+    <h2>Related</h2>
+
+    <ul>
+      {% for zet in zets if related|filter((title) => title == zet.title) %}
+        <li>
+          <a href="{{ zet.url }}">{{ zet.title }}</a>
+        </li>
+      {% endfor %}
+    </ul>
+  </section>
+{% endif %}

source/_includes/zets/tags.html.twig

@@ -0,0 +1,10 @@
+{% if tags is not empty %}
+  <h2>Tags</h2>
+
+  <ul>
+    {% for tag in tags|sort %}
+      <li>{{ tag }}</li>
+    {% endfor %}
+  </ul>
+{% endif %}
+