NEW : CSA computation now working, improvements to come
NEW : CSA computation now working, improvements to come


Former-commit-id: cd721402b44eca5fa71fc04b82d7550eca5b9889 [formerly bc69a5b2e6e4a7ccc221c0392ebf02f217c79f2f]
Former-commit-id: 27ad3709634eddcfc8b9e4d813656f740c850027
Former-commit-id: 666359a77480167ec5c5cd4e69b9cb8d8394a50b
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox