Pylons/deform — pull request #118 by sbrauer (2012-09-18 17:12:38+00:00)
Title: Drag and drop reordering of SequenceWidget items

I thought there needed to be some UI to allow sequence items to be reordered, so I added drag and drop support using [jQuery UI Sortable](http://jqueryui.com/demos/sortable/).
This new feature is optional and disabled by default. To turn it on for a specific sequence, pass orderable=True to the SequenceWidget constructor. (Perhaps instead it should be on by default and explicitly turned off when undesirable?).

I also added a demo and test to deformdemo. I'll send a pull request for that too.