BUG: changed the order of concatenation of transformation in straightening. Fixed #418
BUG: changed the order of concatenation of transformation in straightening. Fixed #418

3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox