Re-add tag archive

impressum.md

@@ -2,7 +2,6 @@
 layout: page
 permalink: /impressum/
 title: Impressum
-tags: [impressum]
 ---
 
 Daniel Kempkens  

tags.html

@@ -0,0 +1,21 @@
+---
+layout: page
+permalink: /tags/
+title: Tag Archive
+---
+
+{% capture site_tags %}{% for tag in site.tags %}{{ tag | first }}{% unless forloop.last %},{% endunless %}{% endfor %}{% endcapture %}
+{% assign tags_list = site_tags | split:',' | sort %}
+
+{% for tag in tags_list %}
+  <h2 id="tag-{{ tag }}">{{ tag }}</h2>
+  <ul>
+    {% for post in site.tags[tag] %}
+      {% if post.title != null %}
+        <li>
+          <a href="{{ post.url }}">{{ post.title }}</a>
+        </li>
+      {% endif %}
+    {% endfor %}
+  </ul>
+{% endfor %}