bug(*): Fix #39 - take into account any filters on an ngRepeat
 * Use applyFilter option in jqyoui-draggable/jqyoui-droppable - which $filter the list before swapping items.
 * Only applicable, if ngRepeat has any filters such as orderBy, limitTo, or any custom $filter to order the list.
 * Check demo/dnd-filters.html for a demo.