google analytics support

src/main/java/com/commafeed/frontend/pages/analytics.js

@@ -0,0 +1,13 @@
+(function(i, s, o, g, r, a, m) {
+	i['GoogleAnalyticsObject'] = r;
+	i[r] = i[r] || function() {
+		(i[r].q = i[r].q || []).push(arguments)
+	}, i[r].l = 1 * new Date();
+	a = s.createElement(o), m = s.getElementsByTagName(o)[0];
+	a.async = 1;
+	a.src = g;
+	m.parentNode.insertBefore(a, m)
+})(window, document, 'script', '//www.google-analytics.com/analytics.js', 'ga');
+
+ga('create', '${trackingCode}', '${domainName}');
+ga('send', 'pageview');