Resolve "Cleanup process outputs"

Closes #35

See merge request !56

Fix #34 to remove trailing and leading whitespace in design file contents

Closes #34

See merge request !54

Add ghenry token for Nextflow Tower to biohpc.config and update Nextflow version (and include tower) in CI

Resolve "Design file - filename with spaces error"

Closes #31 and #32

See merge request !53

Vizapp

See merge request !50