Created check_do_files_exist and make_fname_of_templates.
Created check_do_files_exist and make_fname_of_templates.


Former-commit-id: 9f0d3bffea7cc0beebc1b5b31ae6bb0b6e991399
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox