Load Google Maps & Google Fonts asynchronously #1922

resources/frontend_client/index_template.html

@@ -19,16 +19,23 @@
         <main class="Main flex flex-column flex-full" ng-view></main>
     </body>
 
-
-    <script src="https://ajax.googleapis.com/ajax/libs/webfont/1.4.7/webfont.js"></script>
-    <script>
-        WebFont.load({
-          google: { families: ['Lato:n3,n4,n7'] }
-        });
+    <script type="text/javascript">
+     (function () {
+         function loadScript(src, onload) {
+             var script = document.createElement('script');
+             script.type  = "text/javascript";
+             script.async = true;
+             script.src   = src;
+             if (onload) script.onload = onload;
+             document.body.appendChild(script);
+         }
+         loadScript('https://ajax.googleapis.com/ajax/libs/webfont/1.4.7/webfont.js', function () {
+             WebFont.load({ google: { families: ["Lato:n3,n4,n7"] } });
+         });
+         loadScript('https://maps.googleapis.com/maps/api/js');
+     })();
     </script>
 
-    <script src="https://maps.googleapis.com/maps/api/js" type="text/javascript"></script>
-
     <script>
     (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),

src/metabase/middleware.clj

@@ -142,6 +142,7 @@
                                                       :script-src  ["'unsafe-inline'"
                                                                     "'unsafe-eval'"
                                                                     "'self'"
+                                                                    "https://maps.google.com"
                                                                     "https://www.google-analytics.com" ; Safari requires the protocol
                                                                     "https://*.googleapis.com"
                                                                     "*.gstatic.com"