Switch to jquery 1.9 to keep IE compatibility

index.html

@@ -31,7 +31,7 @@
     <!-- Specific CSS -->
     <link rel = "stylesheet" href = "css/main.css">
 
-    <script type = "text/javascript" src = "https://code.jquery.com/jquery-2.1.3.min.js"></script>
+    <script type = "text/javascript" src = "https://code.jquery.com/jquery-1.11.3.min.js"></script>
     <script type = "text/javascript" src = "https://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.min.js"></script>
     <script type = "text/javascript" src = "js/proj4js/dist/proj4.js"></script>