Don't create an OpenGL window in case of normal charts.

Change-Id: Idb4506712d3902c12aa881a85ddf69a281edff82
Reinitialize GL3D renderer when OpenGL window is changed

Without it when we switch sheets in Calc or slides in Impress
and go back to that page where the GL3DBar chart is then the
renderer does not work.

Change-Id: I9aa6203ed5aa7f94627d886b2f2e5ad34d493843