try a browser list, not only firefox
Merge branch 'master' into browser_list
suppress xdg-open output

at least in the cleanup step.
When opening the browser for submission this debug out is fine.
add --force-submit option
getRelease -> get_release
create print_release_position()
create ask_for_submission()
don't read isrcs/mcn on force-submit
Merge branch 'browser_list'

see pull-request #63
Merge branch 'force_submit'

Conflicts:
	isrcsubmit.py