Update demo/index.html to not rely on old code

demo/index.html

@@ -10,8 +10,7 @@
     <meta name="keywords" content="xmpp chat webchat converse.js" />
 
     <link rel="shortcut icon" type="image/ico" href="images/favicon.ico"/>
-    <link type="text/css" rel="stylesheet" media="screen" href="https://cdn.conversejs.org/5.0.4/dist/font-awesome.min.css" />
-    <link type="text/css" rel="stylesheet" media="screen" href="https://cdn.conversejs.org/5.0.4/dist/website.min.css" />
+    <link type="text/css" rel="stylesheet" media="screen" href="../dist/website.min.css" />
     <script type="text/javascript" src="/analytics.js"></script>
     <noscript><p><img src="//stats.opkode.com/piwik.php?idsite=1" style="border:0;" alt="" /></p></noscript>
     <![if gte IE 9]>
@@ -75,47 +74,37 @@
 </body>
 
 <script>
-    require(['converse'], function (converse) {
-        (function () {
-            /* XXX: This function initializes jquery.easing for the https://conversejs.org
-            * website. This code is only useful in the context of the converse.js
-            * website and converse.js itself is NOT dependent on it.
-            */
-            var $ = converse.env.jQuery;
-            $.extend( $.easing, {
-                easeInOutExpo: function (x, t, b, c, d) {
-                    if (t==0) return b;
-                    if (t==d) return b+c;
-                    if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
-                    return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
-                },
-            });
+    /*
+    @licstart
+    This is free and unencumbered software released into the public domain.
 
-            $(window).scroll(function() {
-                if ($(".navbar").offset().top > 50) {
-                    $(".navbar-fixed-top").addClass("top-nav-collapse");
-                } else {
-                    $(".navbar-fixed-top").removeClass("top-nav-collapse");
-                }
-            });
-            //jQuery for page scrolling feature - requires jQuery Easing plugin
-            $('.page-scroll a').bind('click', function(event) {
-                var $anchor = $(this);
-                $('html, body').stop().animate({
-                    scrollTop: $($anchor.attr('href')).offset().top
-                }, 700, 'easeInOutExpo');
-                event.preventDefault();
-            });
-        })();
-        converse.initialize({
-            // Please use this connection manager only for testing purposes
-            bosh_service_url: 'https://conversejs.org/http-bind/',
-            keepalive: true,
-            message_carbons: true,
-            play_sounds: true,
-            roster_groups: true,
-            show_controlbox_by_default: true,
-        });
+    Anyone is free to copy, modify, publish, use, compile, sell, or
+    distribute this software, either in source code form or as a compiled
+    binary, for any purpose, commercial or non-commercial, and by any
+    means.
+
+    In jurisdictions that recognize copyright laws, the author or authors
+    of this software dedicate any and all copyright interest in the
+    software to the public domain. We make this dedication for the benefit
+    of the public at large and to the detriment of our heirs and
+    successors. We intend this dedication to be an overt act of
+    relinquishment in perpetuity of all present and future rights to this
+    software under copyright law.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+    OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+    ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+    OTHER DEALINGS IN THE SOFTWARE.
+
+    For more information, please refer to <https://unlicense.org/>
+    @licend
+    */
+    converse.initialize({
+        // Please use this connection manager only for testing purposes
+        bosh_service_url: 'https://conversejs.org/http-bind/'
     });
 </script>
 </html>