Download a verified file from another device over WebRTC

frontend/index.html

@@ -566,6 +566,7 @@
     <script src="device-db.js"></script>
     <script src="p2p-client.js"></script>
     <script src="p2p-core.js"></script>
+    <script src="p2p-transfer.js"></script>
     <script src="async-guard.js"></script>
     <script src="sw-update.js"></script>
     <script src="app.js"></script>