The EEE issue has been fixed some month ago (i had forgot) http://apache-wicket.1842946.n4.nabble.com/Bug-in-wicket-jqueryui-Kendo-DateTimePicker-td4673069.html
But isn't it supposed to be 3 'E', not 4 ? http://docs.oracle.com/javase/tutorial/i18n/format/simpleDateFormat.html
