Add method that returns the name of the Rect atlas region
Fix issue 1377, Sort Texture atlas regions by their name
Wrote a proper localToParentCoordinates without the unscaled, unrotated restriction.

GroupTest is a test for it.
Merge remote-tracking branch 'origin/master'
Refactored parentToLocalCoordinates.

I tested this via GroupTest and it seems to work. Not sure why we were doing two rotations for origin? If there was a good reason I'd like to include a test case in GroupTest. I wrote localToParentCoordinates with only a single rotation, so if we really do need two rotations that would also be broken.

Besides using a single rotation, I removed branching where we only saved a couple subtractions.
Changes.
Merge pull request #386 from veger/master

Fix issue 1377, Sort Texture atlas regions by their name
A little clean up for sorting rects by name.
Fixed texture packer alias names (that I just broke).
Add clear() in dispose()

Without clear() even after "stage = null;" click listeners still work eveb on another screens.
Merge pull request #387 from semtiko/patch-1

Stage. Add clear() in dispose()