Add content in the <head> area
I would like to add a Google Tag Manager script to the page so that we can take advantage of the various Google services (Analytics, Webmaster Tools, etc). Is there a way to add this script to the <head> of every page? Or somewhere else like just before the closing </body>? I am aware I could modify the layout and add a custom script but this does not add content to non-editable pages (eg. the article page).
<noscript><iframe src="//www.googletagmanager.com/ns.html?id=GTM-J8W9" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript> <script type="text/javascript"> (function (w, d, s, l, i) { w[l] = w[l] || []; w[l].push({ 'gtm.start': new Date().getTime(), event: 'gtm.js' }); var f = d.getElementsByTagName(s)[0], j = d.createElement(s), dl = l != 'dataLayer' ? '&l=' + l : ''; j.async = true; j.src = '//www.googletagmanager.com/gtm.js?id=' + i + dl; f.parentNode.insertBefore(j, f); }) (window, document, 'script', 'dataLayer', 'GTM-J8W9'); </script>You are able to do it here https://exclaimer.userecho.com/settings/project/customcss/ on tab "External".