Sortable tasks which also can be Drag and Drop , use angular-ui-sortable. Try to make the task items draggable , this commit only make sure that items can be drag and drop for demoble purpose.
Please pay attention, the angular-ui-sortable plugin use JQuery-UI which is a plug-in with big amout of files, so Please remove it if we could find a lighter solution.
Forgot to submit the configuration part for previous commit.
Build 16:58 26/06/2014