title: JQueryUI DatePicker replacing invalid input with minDate
body: <p>I have a date field hooked up to a jQueryUI DatePicker calendar.</p>
  
  <p>This DatePicker has min and max dates, though the user can still type dates outside of this range into the text field.  I have server-side validation to catch these cases that returns an error message to the user and prevents them from advancing.</p>
  
  <p>My problem is that when the form loads again after incorrect input, and tries to display the data already entered, the DatePicker replaces the invalid date with the closest valid date.  </p>
  
  <p>For example, entering a date before the min date returns the form with an error and the min date entered in the field.</p>
  
  <p>Is there any way to prevent the date picker from changing this value?</p>