startDrag update

New startUniversalDrag and stop... functions for both starling and
native flash, mouse and touch. New universal class for static
extentions. Scrollbars are now using new startDrag functions. Added
support for predefined resolutions in initializer (set up FLTools.width
and height before Initializer call). TouchManager now remembers last
touch with Down type. Global TouchManager events are now dispatched
before other events. TouchId parameter is added to TouchManager events.