added a log statement to make it easier to determine the reason a submission failed
CORE-6184: corrected a problem with Agave output files being stored in the wrong directory
CORE-6183: fixed issues with view parameters and job relaunch for Agave apps
CORE-6190 Fixes for jobs with missing output filenames.

Removed nil values from the default parameters map passed to job request formatters.
Fixed syntax error in metadactyl.analyses.params/missing-output-filename.