Fixes: Rotation together with hiding of vkb.
Fixes: Rotation together with hiding of vkb.

Details: Add unit test for MImRotationAnimation. Clear scene in
MImRotationAnimation::appOrientationChangeFinished().

Fixes: NB#243108 - Rotation while Vkb dissapearing causes device freeze

RevBy: Michael Hasselmann, Dominik Röttsches

Full, original commit at d66c30c11710c012f863199ffe0dcbf960d96420 in maliit-framework

perencia/inputcontext-qt4,maliit/inputcontext-qt4,maliit/inputcontext-qt4