INST: installer: now users has to specify installation path that includes "spinalcordtoolbox" (more intuitive)
INST: installer: now users has to specify installation path that includes "spinalcordtoolbox" (more intuitive)

Former-commit-id: b80717c64c00e1e897a87fe3f1d5b785b9ea9b3b [formerly 8de6876b5fd243d36ee56c64e8824a7dcda82bfa]
Former-commit-id: 736c2a9a3b4bfae9f0acd354b177519d3f5767ea
Former-commit-id: 38388d58ad138ab763a85ba58da836d4b007fcb0
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox