Embed Marketo in doc.gitlab.com/ee pages (EE only)

As discussed in www-gitlab-com#421 (closed)

cc @dblessing

mentioned in issue www-gitlab-com#421 (closed)

How much more engineering time is it to get in CE as well so everything on-premise?

@dblessing @jacobvosmaer

@AshleyS I don't think there is a technical difference between embedding all over doc.gitlab.com instead of just under /ee/. But I thought that was the outcome of the discussion in www-gitlab-com#421 (closed), did I misread that?

@jacobvosmaer I don't think you misread I just think I was unclear. Sorry about that.

"people viewing CE and EE docs and any other potential for-pay features like on http://doc.gitlab.com/ee/" should have read "people viewing CE and EE docs and any other potential for-pay features like on http://doc.gitlab.com/ee/ and http://doc.gitlab.com/ce/"

OK then the easiest thing to do is just putting the tracker in every doc.gitlab.com page. I think. What do you think @dblessing ? Can you do this?

Hmm, that could be interesting. The actual pages are generated from the doc directory in gitlab-ce/gitlab-ee and omnibus-gitlab. I wonder if there is a way to inject this snippet at generation time.

@AshleyS Is the script exactly identical to that in www-gitlab-com#421 (closed)?

@dblessing I believe so. @JobV switched out the munchkin code with a jquery async version. Work with him to see what he used as I'm not 100% sure.

@AshleyS Ok, I know now I need to use asynchronous (not async jquery, as @JobV used) because we don't have JQuery already loaded in the doc site. I believe you need to configure this in Marketo and then send me the snippet? It will probably generate a different ID.

@dblessing I made you an admin also so you can find but I believe this is what you need?

(function() {
  var didInit = false;
  function initMunchkin() {
    if(didInit === false) {
      didInit = true;
      Munchkin.init('194-VVC-221');
    }
  }
  var s = document.createElement('script');
  s.type = 'text/javascript';
  s.async = true;
  s.src = '//munchkin.marketo.net/munchkin.js';
  s.onreadystatechange = function() {
    if (this.readyState == 'complete' || this.readyState == 'loaded') {
      initMunchkin();
    }
  };
  s.onload = initMunchkin;
  document.getElementsByTagName('head')[0].appendChild(s);
})();
</script>```

mentioned in merge request !17 (merged)

Status changed to closed by commit 3fd6fcee

@AshleyS Thank you. This is now live on the doc site. I am having issues with my Marketo account so I can't verify at the moment. Let me know if it's not working properly.

@AshleyS is the marketo integration on doc.gitlab.com working now?

Works! Thank you.