Author: Danny Jung
MDL-59073 Workshop: Prevent submission without content or file
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2dd87cb37a3448df877737eff0406e705145fcdc
http://github.com/moodle/moodle/commit/2dd87cb37a3448df877737eff0406e705145fcdc
+ 3.2 en [submissionrequiredcontent,mod_workshop]
+ 3.2 en [submissionrequiredfile,mod_workshop]