scoped some styles to the form
styling tweaks,  second row
assign updated_at properly
default to requirement of 'none' - touch #362
properly tell if a requirement has a dependency
create (unpublished) certificates for *all* datasets
publish certificate on response_set.publish
action for publishing certificate
only allow publishing when the mandatory questions have been answered
correct translations (I thought everything was very wrong for a second)
deal with trying to publish unpublishable questionnaire
link to publish
destroy empty datasets at the correct time
revert the terms of 'ensure_modifications_allowed'