Disable syncing after several attempts

Refactor syncplay manager
Attempt fixing Safari issues (timeupdate event not firing)

webpack.prod.js

@@ -41,6 +41,10 @@ module.exports = merge(common, {
             {
                 test: /\.(wav)$/i,
                 use: ["file-loader"]
+            },
+            {
+                test: /\.worker.js$/,
+                use: ["worker"]
             }
         ]
     }