Analyze and accept dataSource attributes when defined via widget settings

[stefanrahnev]

(Both javascript blocks were used in app.js) This code definition is accepted and passes lint verification (when new dataSource is explicitly instantiated):

$(document).ready(function(){
        $("#products").kendoAutoComplete({
           dataTextField: "ProductName",
           filter: "contains",
           minLength: 3,
           dataSource: new kendo.data.DataSource({
              type: "odata",
              serverFiltering: true,
              serverPaging: true,
              pageSize: 20,
              transport:{
                read: "http://demos.kendoui.com/service/Northwind.svc/Products"
              }
           })
        }); 
}); 

while this one reports errors (dataSource attributes not recognized as valid):

$(document).ready(function(){
        $("#products").kendoAutoComplete({
           dataTextField: "ProductName",
           filter: "contains",
           minLength: 3,
           dataSource: {
              type: "odata",
              serverFiltering: true,
              serverPaging: true,
              pageSize: 20,
              transport:{
                read: "http://demos.kendoui.com/service/Northwind.svc/Products"
              }
           })
        }); 
});