title: Jquery DatePicker Change with dropdown
body: <p>I have a dropdown and JQuery UI Date Picker. Consider Dropdown has two values Sunday and Monday. If I choose Sunday in the dropdown, I want to disable all the Sundays in the calendar. If I choose Monday in the dropdown, I want to enable Sunday and disable Monday
  in the datepicker. When the page loads for the first time, it works fine. But when I change the dropdown value, date picker value is not changing, it still disables the old values.</p>