sidebar code modification

_includes/sidebar.html

@@ -25,7 +25,11 @@
       {% for node in pages_list %}
         {% if node.sidebar != null %}
           {% if node.layout == "page" or node.layout == "page2" %}
+           {% if node.permalink != null}
+	    <a class="sidebar-nav-item{% if page.url == node.url %} active{% endif %}" href="{{ node.permalink }}">{{ node.title }}</a>
+           {% else %}
             <a class="sidebar-nav-item{% if page.url == node.url %} active{% endif %}" href="{{ node.url }}">{{ node.title }}</a>
+           {% endif %}
           {% endif %}
         {% endif %}
       {% endfor %}