Change QmitkRenderWindow size policy
Change QmitkRenderWindow size policy

to prevent it from not appearing in e.g. tutorials

MITK/MITK,MITK/MITK,fmilano/mitk,fmilano/mitk,MITK/MITK,fmilano/mitk,MITK/MITK,fmilano/mitk,fmilano/mitk,fmilano/mitk,fmilano/mitk,MITK/MITK,MITK/MITK