COMP: Fixed namespace of operator<< implementation
COMP: Fixed namespace of operator<< implementation

fmilano/mitk,iwegner/MITK,fmilano/mitk,iwegner/MITK,fmilano/mitk,MITK/MITK,NifTK/MITK,danielknorr/MITK,danielknorr/MITK,NifTK/MITK,iwegner/MITK,NifTK/MITK,MITK/MITK,danielknorr/MITK,fmilano/mitk,fmilano/mitk,fmilano/mitk,RabadanLab/MITKats,RabadanLab/MITKats,danielknorr/MITK,danielknorr/MITK,iwegner/MITK,RabadanLab/MITKats,danielknorr/MITK,iwegner/MITK,RabadanLab/MITKats,danielknorr/MITK,fmilano/mitk,RabadanLab/MITKats,iwegner/MITK,MITK/MITK,MITK/MITK,NifTK/MITK,RabadanLab/MITKats,NifTK/MITK,MITK/MITK,NifTK/MITK,MITK/MITK