Kendo Grid save row selection across pages

HTML

<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.1.322/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2012.1.322/styles/kendo.default.min.css">
<script src="http://cdn.kendostatic.com/2012.1.515/js/kendo.all.min.js"></script>
<div id="grid"></div>

JavaScript

var uids = [];

var products = [{
    "ProductID": 1,
    "ProductName": "Chai",
    "Category": "Beverages",
    "UnitPrice": "18.00"},
{
    "ProductID": 2,
    "ProductName": "Chang",
    "Category": "Beverages",
    "UnitPrice": "19.00"},
{
    "ProductID": 3,
    "ProductName": "Aniseed Syrup",
    "Category": "Condiments",
    "UnitPrice": "10.00"},
{
    "ProductID": 4,
    "ProductName": "Chef Anton's Cajun Seasoning",
    "Category": "Condiments",
    "UnitPrice": "22.00"},
{
    "ProductID": 5,
    "ProductName": "Chef Anton's Gumbo Mix",
    "Category": "Condiments",
    "UnitPrice": "21.35"},
{
    "ProductID": 6,
    "ProductName": "Grandma's Boysenberry Spread",
    "Category": "Condiments",
    "UnitPrice": "25.00"},
{
    "ProductID": 7,
    "ProductName": "Chai",
    "Category": "Beverages",
    "UnitPrice": "18.00"},
{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},
{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category": "Beverages",
    "UnitPrice": "23.00"},{
    "ProductID": 8,
    "ProductName": "Biscuits",
    "Category":...