Issue with jQuery 1.8/1.9

[jasonshaev]

I'm hitting an issue using lrDragNDrop (along with angular smart table) when jQuery 1.8.2 is included on the page. The issue appears to be that, in these older versions of jQuery, event.offsetX and event.offsetY are not copied from the "original" event to the jQuery event, so these lines:
https://github.com/lorenzofox3/lrDragNDrop/blob/master/lrDragNDrop.js#L144
https://github.com/lorenzofox3/lrDragNDrop/blob/master/lrDragNDrop.js#L170

do not work as intended.

Here is a plunk illustrating the issue:
https://plnkr.co/edit/Pm7AN1is7gc7gZ4aCZHs?p=preview

Since offsetX and offsetY are both undef, isAfter() always returns false. This prevents the user from dragging a column to be the "last" (rightmost) column.
NOTE: jQuery must be included before angular. I tested this with jQuery 1.8.2 and 1.9. It doesn't appear to still be an issue with jQuery 2.0+.
NOTE: removing jQuery fixes the issue, as does changing the order of includes.

I will be submitting a pull request shortly which alleviates this issue by checking for jQuery, and if it's available reading offsetX and offsetY from event.originalEvent.

[jasonshaev]

Pull Request: #12