• fix 1413 website & lib works on mobile. We now compile the latest v1.0.8 jquery.ui.touch-punch
  into the JQ version (only 2k) so mobile devices (android, iphone, ipad, ms surface, etc...) are supported out of the box.
  HTML5 version will require re-write to plain mousemove & mobile touchmove instead of drag events in a future release.
• small optimizations (create placeholder content on the fly, moved more DD code into draggable class)