This version allows rotation (in 10th degrees) and perserves
it over save/load cycles. Rotation of multiples of 90 degree
behave close to original except not changing the contained
Graphic and being adaptable to all kinds of graphic. The
rotated Graphic is displayed centered and under preserved
AspectRatio in the available frame space (so no rotation,
180 degree is identical, 90/-90 is identical with 1:1 ratio
of the graphic)

Change-Id: I54b3385f709ee0d34a55324aca919dcd2ce0c009