added google analytics tag

sails/src/assets/app/index.html

@@ -6,6 +6,18 @@
   <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
   <link rel="stylesheet" href="css/main.css">
   <link rel="icon" href="img/logo_pictogram.png" type='image/png'>
+
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=UA-130088727-2"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'UA-130088727-2');
+</script>
+
+
   <script src="js/libs.js"></script>
   <script src="js/main.js"></script>
 </head>

sails/src/assets/scripts/modules/login/controllers/login.js

@@ -161,6 +161,11 @@ $scope.signup = function (formName) {
     .post(config.backend + '/sup', $scope.formdata)
     .success(function () {
       $scope.slide.rightTo('confirmation');
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'UA-130088727-3');
     })
     .error(function () {
       ngToast.danger({ content: $translate.instant('user_exists', {email: $scope.formdata.email}) });