phase2: add modular apps, auth scaffolding, and base template routing

templates/partials/messages.html

@@ -0,0 +1,7 @@
+{% if messages %}
+  <section class="messages">
+    {% for message in messages %}
+      <div class="message {{ message.tags }}">{{ message }}</div>
+    {% endfor %}
+  </section>
+{% endif %}