Fix: don't use serviceworker for http:// uris -> fixes http stream in local player

htdocs/sw.js

@@ -28,14 +28,15 @@ self.addEventListener('install', function(event) {
 });
 
 self.addEventListener('fetch', function(event) {
+    if (event.request.url.match('^http://'))
+        return false;
     event.respondWith(
         caches.match(event.request).then(function(response) {
             if (response)
                 return response
             else
                 return fetch(event.request);
-      }
-    )
+        })
     );    
 });