Resolve "submission code does not consider --submit option"

Release notes

Fixed '--submit' argument for submission scripts being without effect. submit.guessSubmissionController now takes an argparser namespace as optional argument and will then take --submit value into account if needed. Matching is done based on the name of the respective controller containing the string provided to the --submit argument (case-insensitive)

Details

Stupidly forgotten when originally implementing the submission code....

Closes #143 (closed)