Impoved messages in LabelVertabrae.
Impoved messages in LabelVertabrae.


Former-commit-id: bb3b567253030097cf28ad2a589b7fb6d06ea6a5
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox