feat(tagmanager): support to add google tagmanager id, closes #2569

public/views/index.html

@@ -56,7 +56,6 @@
     require(['app'], function (app) {
 	    app.boot();
     })
-
 	</script>
 
 	[[if .GoogleAnalyticsId]]
@@ -71,4 +70,21 @@
 		</script>
 	[[end]]
 
+	[[if .GoogleTagManagerId]]
+		<script>
+			dataLayer = [{
+				'IsSignedIn': '[[.User.IsSignedIn]]',
+				'Email': '[[.User.Email]]',
+				'UserId': '[[.User.Id]]',
+				'OrgId': '[[.User.OrgId]]',
+				'OrgName': '[[.User.OrgName]]',
+			}];
+		</script>
+		<!-- Google Tag Manager -->
+		<noscript><iframe src="//www.googletagmanager.com/ns.html?id=GTM-K2MJ65" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+		<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='//www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+		})(window,document,'script','dataLayer','[[.GoogleTagManagerId]]');</script>
+		<!-- End Google Tag Manager -->
+	[[end]]
 </html>