Link fixes

Author: Ives van Hoorne

packages/app/src/app/index.html

@@ -22,7 +22,7 @@
   <meta name="description" content="CodeSandbox is an online editor tailored for web applications.">
   <link rel="shortcut icon" href="./favicon.ico">
   <link rel="manifest" href="/manifest.json">
-  <link rel="preload" as="font" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Source+Code+Pro:500" rel="stylesheet">
+  <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Source+Code+Pro:500" rel="stylesheet">
   <title>CodeSandbox</title>
 
   <!-- AMD Loader for Monaco -->
@@ -40,7 +40,7 @@
     })(window, document, 'script', 'dataLayer', 'GTM-T3L6RFK');
   </script>
   <!-- End Google Tag Manager -->
-  <script async src="https://cdn.ravenjs.com/3.17.0/raven.min.js" crossorigin="anonymous"></script>
+  <script src="https://cdn.ravenjs.com/3.17.0/raven.min.js" crossorigin="anonymous"></script>
   <!-- <script async src="//cdn.headwayapp.co/widget.js"></script> -->
 
   <script async rel="prefetch" src="https://js.stripe.com/v3/"></script>