Fix 1827, added execution time in sct_launcher
Fix 1827, added execution time in sct_launcher


Former-commit-id: 73f022b1d91be4066027da4bcdf1202b3bc09825
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox