Cache gravatar requests

server/static/dev.html

@@ -29,5 +29,15 @@
       </div>
     </div>
     <script src="/static/bundle.js"></script>
+    <script type="text/javascript">
+      if ('serviceWorker' in navigator) {
+        navigator.serviceWorker.register('/service-worker.js')
+        .then(function(reg) {
+          console.log('SW registration succeeded');
+        }).catch(function(error) {
+          console.log('SW registration failed: ' + error);
+        });
+      };
+    </script>
   </body>
 </html>

server/static/service-worker.js

@@ -1,3 +1,5 @@
+/* eslint-disable */
+
 /*
   Copyright 2014 Google Inc. All Rights Reserved.
 
@@ -52,6 +54,7 @@ Cache.prototype.addAll||(Cache.prototype.addAll=function(t){function e(t){this.n
 
   // Assets
   global.toolbox.router.get(/\/static\//, global.toolbox.cacheFirst);
+  global.toolbox.router.get('/(.*)', global.toolbox.fastest, {origin: 'https://secure.gravatar.com'});
 
   // API GET calls
   global.toolbox.router.default = global.toolbox.networkFirst;