Added Global coordinates and manipulation, improved matrix performance, added OnKeyDown function to Input class.

Signed-off-by: Denis Dik <denis.dik@hs-furtwangen.de>
Added new Functions to Input.cs and Camera.cs. Reworked Transformation.cs to fix rotation bug.

Signed-off-by: Denis Dik <denis.dik@hs-furtwangen.de>
Fixed some bugs parent child bugs.

Signed-off-by: Denis Dik <denis.dik@hs-furtwangen.de>
Fixed Quaternion rotation.

Signed-off-by: Denis Dik <denis.dik@hs-furtwangen.de>
Merge remote-tracking branch 'origin/SceneManagement' into pre-0.5-master