Stop resize after placeholder resize

Previously the resize.stop callback was being called before the widget
had reached the final size that Gridster would make it (the widget continues
to grows up and until it matches the placeholder size after releasing the drag)

This change pushes the resize.stop callback to the last possible moment
where the size of the widget the callback receives is more likely to be
correct.

The second commit is just a regen of the distributables, feel free to drop that commit :)

P.s. Gridster is *ace* thank you!