Support JQuery-UI widget

Hi,

I have a use-case, where a jquery-ui autocomplete widget would come in very handy. 

Also, djangopackages.org says, that we don't support JQuery-UI widget, but why couldn't we? 

At this moment, I share with you a pretty basic JSONP-producing class AND a HTML file with example use of jquery-ui widget. As jquery-ui widget seems to be pretty extensible now and it supports both multiple values http://jqueryui.com/autocomplete/#multiple-remote and scrollable results http://jqueryui.com/autocomplete/#maxheight and many more stuff, perhaps at some point in the future it would be cool to add more jquery-ui autocomplete widget features.

But for now, you get a very basic support with some simple code, that I really copy-pasted from stackoverflow.com , with some minor edits. Because, why shouldn't we support jquery-ui? I don't see why :-)