Removed declaration_global_variables_specific. Added a message for Redo.
Removed declaration_global_variables_specific. Added a message for Redo.


Former-commit-id: ea93c8c130b5cfabe76336557f23b36a0bf4aa27
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox