Updates jquery and adds the uncompressed and map files.

index.html

     <meta itemprop="name" content="Jitsi Meet"/>
     <meta itemprop="description" content="Join a WebRTC video conference powered by the Jitsi Videobridge"/>
     <meta itemprop="image" content="/images/jitsilogo.png"/>
-    <script src="libs/jquery.min.js"></script>
+    <script src="libs/jquery-2.1.1.min.js"></script>
     <script src="libs/strophe/strophe.jingle.adapter.js?v=1"></script><!-- strophe.jingle bundles -->
     <script src="libs/strophe/strophe.jingle.bundle.js?v=8"></script>
     <script src="libs/strophe/strophe.jingle.js?v=1"></script>