Initial drafting for instant messaging blog post

templates/post.html

@@ -5,6 +5,8 @@
   {{ page.title }}
 </h1>
 <p class="subtitle"><strong>Created: {{ page.date }}</strong></p>
+{% if page.updated %}
 <p class="subtitle"><strong>Modified: {{ page.updated }}</strong></p>
+{% endif %}
 {{ page.content | safe }}
 {% endblock content %}