Updated desktop favicon and init backdrop

web/desktop.system

@@ -13,6 +13,7 @@
     <script type="text/javascript" src="./SystemAO/desktop/script/jsCalendar/source/jsCalendar.js"></script>
     <script type="text/javascript" src="./script/applocale.js"></script>
     <script type="text/javascript" src="./script/html2canvas.min.js"></script>
+    <link rel="icon" href="img/system/favicon.png">
     <style>
         body {
             background-repeat: no-repeat;