wip: first working version

templates/layout.html.twig

@@ -42,6 +42,13 @@
             </nav>
         {% endif %}
         <div id="content">
+            {% for label, messages in app.flashes %}
+                {% for message in messages %}
+                    <article>
+                        {{ message }}
+                    </article>
+                {% endfor %}
+            {% endfor %}
             {% block content %}{% endblock %}
             <div id="loading-indicator">
                 <progress />