initial commit, add Publish, add minimal theme, add content

Content/Archive/220123-ff.de v10 felixfoertsch.github.io/_includes/nav/pages.html

@@ -0,0 +1,8 @@
+{% assign pages_list = site.pages|sort:"sidebar_sort_order" %}
+{% for node in pages_list %}
+  {% if node.title != null %}
+    {% if node.sidebar_link %}
+      <a class="nav-link{% if page.url == node.url %} active{% endif %}" href="{{ node.url | relative_url }}">{{ node.title }}</a>
+    {% endif %}
+  {% endif %}
+{% endfor %}