JSGrid DateTime Filtering

HTML

<link rel="stylesheet" href="http://js-grid.com/css/jsgrid.min.css">
<link rel="stylesheet" href="http://js-grid.com/css/jsgrid-theme.min.css">
<script src="http://js-grid.com/js/jsgrid.min.js"></script>
<script src="http://underscorejs.org/underscore-min.js"></script>
<link rel="stylesheet" href="https://code.jquery.com/ui/1.10.4/themes/redmond/jquery-ui.css">
<script src="https://code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>jsGrid - Data Manipulation</title>
    <link rel="stylesheet" type="text/css" href="demos.css" />
    <link href='http://fonts.googleapis.com/css?family=Open+Sans:300,600,400' rel='stylesheet' type='text/css'>

    <link rel="stylesheet" type="text/css" href="../css/jsgrid.css" />
    <link rel="stylesheet" type="text/css" href="../css/theme.css" />

    <link rel="stylesheet" href="http://code.jquery.com/ui/1.11.2/themes/cupertino/jquery-ui.css">
    <script src="http://code.jquery.com/jquery-1.10.2.js"></script>
    <script src="http://code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
    <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.min.js"></script>

    <script src="db.js"></script>

    <script src="../src/jsgrid.core.js"></script>
    <script src="../src/jsgrid.load-indicator.js"></script>
    <script src="../src/jsgrid.load-strategies.js"></script>
    <script src="../src/jsgrid.sort-strategies.js"></script>
    <script src="../src/jsgrid.field.js"></script>
    <script src="../src/fields/jsgrid.field.text.js"></script>
    <script src="../src/fields/jsgrid.field.number.js"></script>
    <script src="../src/fields/jsgrid.field.select.js"></script>
    <script src="../src/fields/jsgrid.field.checkbox.js"></script>
    <script src="../src/fields/jsgrid.field.control.js"></script>
    </head>
<body>
    <h1>Data Manipulation</h1>
    <div id="jsGrid"></div>

    <div id="detailsDialog">
        <form...

CSS

html,
body {
    height: 100%;    
}

JavaScript

$(function() {
            $("#jsGrid").jsGrid({
                height: "70%",
                width: "100%",
                editing: true,
                autoload: true,
                paging: true,
                deleteConfirm: function(item) {
                    return "The client \"" + item.Name + "\" will be removed. Are you sure?";
                },
                rowClick: function(args) {
                    showDetailsDialog("Edit", args.item);
                },
                controller: db,
                fields: [
                    { name: "Name", type: "text", width: 150 },
                    { name: "Age", type: "number", width: 50 },
                    { name: "Address", type: "text", width: 200 },
                    { name: "Country", type: "select", items: db.countries, valueField: "Id", textField: "Name" },
                    { name: "Married", type: "checkbox", title: "Is Married", sorting: false },
                    {
                        type: "control",
                        modeSwitchButton: false,
                        editButton: false,
                        headerTemplate: function() {
                            return $("<button>").attr("type", "button").text("Add")
                                .on("click", function () {
                                    showDetailsDialog("Add", {});
                                });
                        }
                    }
                ]
            });
            $("#detailsDialog").dialog({
                autoOpen: false,
                width: 400,
                close: function() {
                    $("#detailsForm").validate().resetForm();
                    $("#detailsForm").find(".error").removeClass("error");
                }
            });
            $("#detailsForm").validate({
                rules: {
                    name: "required",
                    age: { required: true, range: [18, 150] },
                    address: {...