sortable: option dropOnEmpty wasn't working correctly - in fact, you could always drop on empty containers. Now it checks again for the option, but it's default is true.
sortable: option dropOnEmpty wasn't working correctly - in fact, you could always drop on empty containers. Now it checks again for the option, but it's default is true.

GrayYoung/jQuery.UI.Extension,GrayYoung/jQuery.UI.Extension