Reorganize the code in multiple new files

mobile/www/index.html

@@ -88,6 +88,9 @@
 
 <!-- Your custom app scripts -->
 <script src="js/app.js"></script>
+<script src="js/database.js"></script>
+<script src="js/graph.js"></script>
+<script src="js/stats.js"></script>
 <script src="js/index.js"></script>
 
 </body>