update disqus settings and override url/identifier to not split threads

_layouts/page.html

@@ -14,19 +14,22 @@ <h1>{{ page.title }}</h1>
   <!-- disqus comments -->
  {% if page.comments %}
  <div id="disqus_thread"></div>
-  <script type="text/javascript">
-      /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
-      var disqus_shortname = 'karpathyblog'; // required: replace example with your forum shortname
-
-      /* * * DON'T EDIT BELOW THIS LINE * * */
-      (function() {
-          var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
-          dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';
-          (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
-      })();
+  <script>
+  /**
+  *  RECOMMENDED CONFIGURATION VARIABLES: EDIT AND UNCOMMENT THE SECTION BELOW TO INSERT DYNAMIC VALUES FROM YOUR PLATFORM OR CMS.
+  *  LEARN WHY DEFINING THESE VARIABLES IS IMPORTANT: https://disqus.com/admin/universalcode/#configuration-variables*/
+  var disqus_config = function () {
+    this.page.url = "{{site.url}}{{page.url}}";  // Replace PAGE_URL with your page's canonical URL variable
+    this.page.identifier = "{{page.url}}"; // Replace PAGE_IDENTIFIER with your page's unique identifier variable
+  };
+  (function() { // DON'T EDIT BELOW THIS LINE
+  var d = document, s = d.createElement('script');
+  s.src = 'https://karpathyblog.disqus.com/embed.js';
+  s.setAttribute('data-timestamp', +new Date());
+  (d.head || d.body).appendChild(s);
+  })();
   </script>
-  <noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
-  <a href="http://disqus.com" class="dsq-brlink">comments powered by <span class="logo-disqus">Disqus</span></a>
+  <noscript>Please enable JavaScript to view the <a href="https://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
   {% endif %}
 
 </div>