If you want to target legacy browsers and don't mind download size, it's better to stick with jqueryui if you can. I have used combination of jqueryui and jsplu

If you want to target legacy browsers and don't mind download size, it's better to stick with jqueryui if you can. I have used combination of jqueryui and jsplumb to accomplish similar real world web apps. Jqueryui is pretty old school and too heavy(size), but lets you get the job done quickly. It also can expand beyond drag and drop into sortable and provide extensive customisation support via hooks to go beyond the out-of-the-box features. Because it's very mature there are tons of help and practical examples available both in their site and in stack oveflow / jsfiddle.