[tony_sologubov]

@Alex,

Yes, datepicker widget is not designed to work in customer area, only in admin back-end.
If you want to make it working in customer zone, you need to create your own version of this class.

Basic plan should be as follows:
- Extend\XLite\View\DatePicker class in your module;
- Define your own versions of getJSFiles(), getCSSFiles() and getFieldTemplate() methods, so that they would use files from customer area;
- Use your class in your ItemsList.