owselectcolumns: Ensure domain consistency
owselectcolumns: Ensure domain consistency

Ensure that non primitive variables cannot be added to Features/Target
views.

marinkaz/orange3,marinkaz/orange3,kwikadi/orange3,qPCR4vir/orange3,marinkaz/orange3,qPCR4vir/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,kwikadi/orange3,kwikadi/orange3,kwikadi/orange3,qPCR4vir/orange3,marinkaz/orange3,marinkaz/orange3,qPCR4vir/orange3,marinkaz/orange3,kwikadi/orange3,cheral/orange3,cheral/orange3,qPCR4vir/orange3,cheral/orange3,cheral/orange3,kwikadi/orange3