adding a check on the VTK setting about USE_QT prior to compilation otherwise it simply crashes at compilation
adding a check on the VTK setting about USE_QT prior to compilation otherwise it simply crashes at compilation

NicolasSchnitzler/medInria-public,aabadie/medInria-public,rdebroiz/medInria-public,rdebroiz/medInria-public,rdebroiz/medInria-public,aabadie/medInria-public,NicolasSchnitzler/medInria-public,aabadie/medInria-public,NicolasSchnitzler/medInria-public