Author: Shamim Rezaie
MDL-70818 mod_workshop: implement activity_dates for the workshop module
http://git.moodle.org/gw?p=moodle.git;a=commit;h=57926096b81577a8bb3525d205d92cd29186b4b4
http://github.com/moodle/moodle/commit/57926096b81577a8bb3525d205d92cd29186b4b4
+ 3.11 en [activitydate:assessmentsclose,mod_workshop]
+ 3.11 en [activitydate:assessmentsclosed,mod_workshop]
+ 3.11 en [activitydate:assessmentsopen,mod_workshop]
+ 3.11 en [activitydate:assessmentsopened,mod_workshop]
+ 3.11 en [activitydate:submissionsclose,mod_workshop]
+ 3.11 en [activitydate:submissionsclosed,mod_workshop]
+ 3.11 en [activitydate:submissionsopen,mod_workshop]
+ 3.11 en [activitydate:submissionsopened,mod_workshop]