Fix #259

# Conflicts:
#	_layouts/projects.html
#	_layouts/welcome.html

_includes/body/nav.html

@@ -15,7 +15,7 @@
       </li>
     {% endfor %}
   {% else %}
-    {% assign pages = site.pages | where: "menu", true %}
+    {% assign pages = site.html_pages | where: "menu", true %}
     {% assign documents = site.documents | where: "menu", true %}
     {% assign nodes = pages | concat: documents | sort: "order" %}