Issue 5373 - Remove the "blog" from acceptableads.com and link to blog.acceptableads.com

includes/sidebar/primary-navigation.tmpl

 {#
  # This file is part of acceptableads.org.
  # Copyright (C) 2016 Eyeo GmbH
  #
  # acceptableads.org is free software: you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # acceptableads.org is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with acceptableads.org.  If not, see <http://www.gnu.org/licenses/>.
  #}
 
 <ul>
   {% for sitemap_page, sitemap_parent, sitemap_children in sitemap %}
-  <li class="{% if parent == sitemap_page or page == sitemap_page %} active {% endif %} {% if sitemap_children | length > 0 %} has-submenu {% endif %}">
-    {{ sitemap_page | linkify }}{{ sitemap_parent | translate(sitemap_page, "Primary navigation label") }}</a>
-    {% if sitemap_children | length > 0 %}
-      <ul>
-      {% for sitemap_page, sitemap_child in sitemap_children %}
-        <li class="{% if page == sitemap_page %} active {% endif %}">
-          {{ sitemap_page | linkify }}{{ sitemap_child | translate(sitemap_page, "Primary navigation label under \"" + sitemap_parent + "\"") }}</a>
-        </li>
-      {% endfor %}
-      </ul>
-    {% endif %}
-  </li>
+  {% if 'http' in sitemap_page %}
+    <li>
+      <a href="{{ sitemap_page }}" target="_blank">
+        {{ sitemap_parent | translate(sitemap_parent, "Primary navigation label") }}
+        <img src="/img/png/icon-external-link.png" srcset="/img/svg/icon-external-link.svg 2x" alt="{{ "External Link" | translate("external-link-icon", "Image alt text") }}" class="navigation-icon">
+      </a>
+    </li>
+  {% else %}
+    <li class="{% if parent == sitemap_page or page == sitemap_page %} active {% endif %} {% if sitemap_children | length > 0 %} has-submenu {% endif %}">
+      {{ sitemap_page | linkify }}{{ sitemap_parent | translate(sitemap_page, "Primary navigation label") }}</a>
+      {% if sitemap_children | length > 0 %}
+        <ul>
+        {% for sitemap_page, sitemap_child in sitemap_children %}
+          <li class="{% if page == sitemap_page %} active {% endif %}">
+            {{ sitemap_page | linkify }}{{ sitemap_child | translate(sitemap_page, "Primary navigation label under \"" + sitemap_parent + "\"") }}</a>
+          </li>
+        {% endfor %}
+        </ul>
+      {% endif %}
+    </li>
+  {% endif %}
   {% endfor %}
 </ul>