Move analytics code into separate file and add to .gitignore

Thanks to hawkee for the tip.

.gitignore

@@ -8,6 +8,7 @@
 .svn/
 .project
 .pydevproject
+analytics.js
 
 Backbone.Overview
 tags

index.html

@@ -13,6 +13,7 @@
     <link type="text/css" rel="stylesheet" media="screen" href="components/fontawesome/css/font-awesome.min.css" />
     <link type="text/css" rel="stylesheet" media="screen" href="css/theme.css" />
     <link type="text/css" rel="stylesheet" media="screen" href="css/converse.min.css" />
+    <script type="text/javascript" src="analytics.js"></script>
     <!-- Only for development: <script data-main="main" src="components/requirejs/require.js"></script> -->
     <![if gte IE 9]>
         <script src="builds/converse.website.min.js"></script>
@@ -223,12 +224,6 @@
     </section>
 </body>
 
-<script type="text/javascript">
-    var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
-    document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
-</script>
-<script type="text/javascript">try { var pageTracker = _gat._getTracker("UA-2128260-8"); pageTracker._trackPageview(); } catch(err) {}</script>
-
 <script>
     require(['converse'], function (converse) {
         (function () {
@@ -253,7 +248,6 @@
                 event.preventDefault();
             });
         })();
-
         converse.initialize({
             bosh_service_url: 'https://conversejs.org/http-bind/', // Please use this connection manager only for testing purposes
             i18n: locales['en'], // Refer to ./locale/locales.js to see which locales are supported