Revert PR #663 allowing spaces in file names (#689)
Revert PR #663 allowing spaces in file names (#689)

It generally works but gradient shimming and Aulocref
can fail in background automation.
OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ,OpenVnmrJ/OpenVnmrJ