Added 'page not found do you wnat to make this page' page. Minor tweaks

templates/pagenotfound.html

@@ -0,0 +1,7 @@
+{% extends "expobase.html" %}
+{% block title %}Page not found {{ path }}{% endblock %}
+{% block body %}
+<h1>Page not found {{ path }}</h1>
+<a href="{%url editflatpage path %}">Create this page.</a>
+{% include "menu.html" %}
+{% endblock %}