Update flatpickr v4.5.1 to v4.6.2

Author: Son-HNguyen

3dwebclient/index.html

@@ -37,8 +37,8 @@
         <link rel="icon" type="image/png" href="../theme/img/favicon.png" sizes="16x16">
         <script src="../ThirdParty/jquery-3.3.1.min.js"></script>
         <!-- Load jquery ui datepicker FLATPICKR -->
-        <link rel="stylesheet" type="text/css" href="../ThirdParty/flatpickrv4.5.1.css">
-        <script type="text/javascript" src="../ThirdParty/flatpickrv4.5.1.js"></script>
+        <link rel="stylesheet" type="text/css" href="../ThirdParty/flatpickrv4.6.2.css">
+        <script type="text/javascript" src="../ThirdParty/flatpickrv4.6.2.js"></script>
         <!-- CesiumJS -->
         <script src="../ThirdParty/Cesium/Cesium.js"></script> 
         <script src="../ThirdParty/Intersection/IntersectionAPI.js"></script>