Fixed disqus threads

source/_includes/disqus.html

@@ -5,7 +5,8 @@
       {% if page.comments == true %}
         {% comment %} `page.comments` can be only be set to true on pages/posts, so we embed the comments here. {% endcomment %}
         // var disqus_developer = 1;
-        //var disqus_identifier = '{{ site.url }}{{ page.url }}';
+        var disqus_title = '{{ page.title }}';
+        var disqus_identifier = '{{ page.url }}';
         //var disqus_url = '{{ site.url }}{{ page.url }}';
         var disqus_script = 'embed.js';
       {% else %}