Add parent pages to nav.

content/pages/foss.markdown

+title: Freie Software
+slug: foss
+lang: de
+
+Lorem ipsum dolor sit amet.

content/pages/index.markdown

 title: Willkommen!
 slug: index
+status: hidden
 
 Lorem ipsum dolor sit amet.

content/pages/pedagogics.markdown

+title: Pädagogik
+slug: pedagogics
+lang: de
+
+Lorem ipsum dolor sit amet.

content/pages/personal.markdown

+title: Persönliches
+slug: personal
+lang: de
+
+Lorem ipsum dolor sit amet.

theme/templates/base.html

@@ -41,7 +41,9 @@
     {% if DISPLAY_PAGES_ON_MENU %}
      {% for group in pages | groupby('category') %}
       <li class="{{ group.grouper }}{% if page and group.grouper == page.category %} current{% endif %}">
-       {{ group.grouper }}
+       <a href="{{ SITEURL }}/{{ group.grouper }}.html">
+        {{ pages | selectattr('slug', 'equalto', group.grouper) | map(attribute='title') | join('') }}
+       </a>
        <ul>
         {% for p in group.list %}
          {% if p.url %}