Updated jqAutocomplete to fix an issue where the KO event handler would not fire.

For some reason, the knockout event handler (through ko.utils.registerEventHandler) does not properly trigger when using a jqueryui widget.  Even if the event handler is set to catch "change", it won't cause an update to the underlying observable.

Additionally, removed non-jqueryui binding handlers, and added some more default options to some handlers.