Implement Segment.io baseline integration

[wdprice]

Implement the baseline analytics features we get from segment.

Page by page instrumentation is out of scope.

[ajefts]

Here is the snippet you will need to add:

<script>
  !function(){var analytics=window.analytics=window.analytics||[];if(!analytics.initialize)if(analytics.invoked)window.console&&console.error&&console.error("Segment snippet included twice.");else{analytics.invoked=!0;analytics.methods=["trackSubmit","trackClick","trackLink","trackForm","pageview","identify","reset","group","track","ready","alias","debug","page","once","off","on","addSourceMiddleware","addIntegrationMiddleware","setAnonymousId","addDestinationMiddleware"];analytics.factory=function(e){return function(){var t=Array.prototype.slice.call(arguments);t.unshift(e);analytics.push(t);return analytics}};for(var e=0;e<analytics.methods.length;e++){var key=analytics.methods[e];analytics[key]=analytics.factory(key)}analytics.load=function(key,e){var t=document.createElement("script");t.type="text/javascript";t.async=!0;t.src="https://cdn.segment.com/analytics.js/v1/" + key + "/analytics.min.js";var n=document.getElementsByTagName("script")[0];n.parentNode.insertBefore(t,n);analytics._loadOptions=e};analytics.SNIPPET_VERSION="4.13.1";
  analytics.load("zJNgNa43ENbl5ccJflkpDPncAXurQTUA");
  analytics.page();
  }}();
</script>

[callmekatootie]

Code copied into index.html.

The segment api key is under REACT_APP_SEGMENT_API_KEY env variable. We need to set it in prod and build the front end. Will be done when we sync prod with dev