Add local config to disable disqus and analytics

_config.yml

@@ -42,3 +42,6 @@ contact: '/contact.html'
 gems:
   - jekyll-redirect-from
   - jekyll-sitemap
+
+enable_disqus: true
+enable_analytics: true

_includes/disqus.html

@@ -1,3 +1,4 @@
+{% if site.enable_disqus %}
 <div id="disqus_thread"></div>
 <script type="text/javascript">
     /* * * CONFIGURATION VARIABLES * * */
@@ -11,3 +12,4 @@
     })();
 </script>
 <noscript>Please enable JavaScript to view the <a href="https://disqus.com/?ref_noscript" rel="nofollow">comments powered by Disqus.</a></noscript>
+{% endif %}

_includes/google_analytics.html

@@ -1,3 +1,4 @@
+{% if site.enable_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),
@@ -8,3 +9,4 @@
   ga('send', 'pageview');
 
 </script>
+{% endif %}

_local_config.yml

@@ -0,0 +1,2 @@
+enable_disqus: false
+enable_analytics: false