Replace the Netflux old client (netflux.js) by the Netflux2 client.

Move the WebRTC peer-to-peer use case in /padrtc, which still uses the old
Netflux client
Use es6-promises.min.js to solve a issue with some browser and the new
Netflux client

www/padrtc/inner.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta content="text/html; charset=utf-8" http-equiv="content-type"/>
+    <script src="/bower_components/jquery/dist/jquery.min.js"></script>
+    <script src="/bower_components/ckeditor/ckeditor.js"></script>
+</head>
+<body>
+    <textarea style="display:none" id="editor1" name="editor1"></textarea>
+</body>
+</html>
+