BUG: fixed edge effect due to wrong affine transform in registration. Work still in progress
BUG: fixed edge effect due to wrong affine transform in registration. Work still in progress

Former-commit-id: 3b81228d5fd0371837b18bdbade365e4f4ad9ff8 [formerly 9d66ef92cedc8ea25e16c1ad375f33855e2abb74]
Former-commit-id: c387bb122d2dc4d828ed50fbff0f729324cdbd9d
Former-commit-id: fc1539151a6e033cc4bc28369079758b17731793
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox