Add navbar

source/_layouts/default.html.twig

@@ -1,5 +1,9 @@
 {% extends 'app' %}
 
 {% block body %}
-    {% block content %}{% endblock %}
+    {% include 'navbar' %}
+
+    {% block content_wrapper %}
+        {% block content %}{% endblock %}
+    {% endblock %}
 {% endblock %}

source/_layouts/page.html.twig

@@ -1,6 +1,6 @@
 {% extends "default" %}
 
-{% block body %}
+{% block content_wrapper %}
     <h1>{{ page.title }}</h1>
 
     {{ parent() }}