Add additional GTM script (#1498)

Author: rushenn

source/_templates/gtm-noscript.html

@@ -0,0 +1,3 @@
+<!-- Google Tag Manager: docs.min.io (noscript) -->
+<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-56L9FLVL" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+<!-- End Google Tag Manager (noscript) -->

source/_templates/head.html

@@ -9,7 +9,14 @@
 <link rel="preload" href="{{ pathto('_static/fonts/inter/Inter-Bold.woff2', 1) }}" as="font" type="font/woff2" crossorigin>
 <link rel="preconnect" href="https://E1CSOK3UC2-dsn.algolia.net" crossorigin />
 
-<!-- Google Tag Manager -->
+<!-- Google Tag Manager: docs.min.io -->
+<script>(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=
+'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+})(window,document,'script','dataLayer','GTM-56L9FLVL');</script>
+
+<!-- Google Tag Manager: main -->
 <script>
     (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],

source/_templates/layout.html

@@ -59,6 +59,8 @@
 {%- endmacro %}
 
 {%- block header %}
+   {%- include "gtm-noscript.html" %}
+
    {%- include "header.html" %}
 {%- endblock %}