Remove extensions from _includes to simplify naming

_includes/scripts

@@ -0,0 +1,20 @@
+<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
+<script>window.jQuery || document.write('<script src="{{ base_path }}/assets/js/vendor/jquery-1.9.1.min.js"><\/script>')</script>
+<script src="{{ base_path }}/assets/js/scripts.min.js"></script>
+
+{% if site.google_analytics %}
+<script>
+  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+
+  ga('create', '{{ site.google_analytics }}', 'auto');
+  ga('send', 'pageview');
+
+</script>
+{% endif %}
+
+{% if page.comments %}
+  {% include disqus-comments %}
+{% endif %}