Added option -init-template and canceled the mandatory call for -l.
Added option -init-template and canceled the mandatory call for -l.


Former-commit-id: a97754c75083e14e93e630ebeba701e1f3717a7c
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox