Add sentry exception monitoring.

templates/base.html

@@ -58,6 +58,7 @@
     <script src="//cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.2.0/js/bootstrap-datepicker.min.js"></script>
 
     <script src="//cdn.jsdelivr.net/g/bootbox@4.1.0,underscorejs@1.5.2,restangular@1.2.0,d3js@3.3.3,momentjs"></script>
+    <script src="//cdn.ravenjs.com/1.1.14/jquery,native/raven.min.js"></script>
 
     <script src="https://checkout.stripe.com/checkout.js"></script>
 
@@ -73,6 +74,12 @@
       <script src="/static/{{ script_path }}?v={{ cache_buster }}"></script>
     {% endfor %}
 
+    {% if sentry_public_dsn %}
+      <script type="text/javascript">
+        Raven.config('{{ sentry_public_dsn }}').install();
+      </script>
+    {% endif %}
+
 {% if mixpanel_key %}
 <!-- start Mixpanel --><script type="text/javascript">
 (function(e,b){if(!b.__SV){var a,f,i,g;window.mixpanel=b;a=e.createElement("script");a.type="text/javascript";a.async=!0;a.src=("https:"===e.location.protocol?"https:":"http:")+'//cdn.mxpnl.com/libs/mixpanel-2.2.min.js';f=e.getElementsByTagName("script")[0];f.parentNode.insertBefore(a,f);b._i=[];b.init=function(a,e,d){function f(b,h){var a=h.split(".");2==a.length&&(b=b[a[0]],h=a[1]);b[h]=function(){b.push([h].concat(Array.prototype.slice.call(arguments,0)))}}var c=b;"undefined"!==