Only show make live button if there is editable code

theme/main.html

@@ -41,5 +41,9 @@
 {% endblock %}
 
 {% block content %}
+{% if 'thebelab-code' in super() %}
 {{ super() | replace('</h1>', '</h1> <button id="thebelab-activate-button" class="thebelab-button" onclick="initThebelab()">Make live</button>', count=1) }}
+{% else %}
+{{ super() }}
+{% endif %}
 {% endblock %}
\ No newline at end of file