Developer credits
Git commits in Moodle 2.8.x by Marc Català
commit f81f6bbda5e50e4c959ed99f7e9e4306e20c8e30 Author: Marc Català <reskit@gmail.com> Date: Sat, 20 Jun 2015 19:02:22 +0800 Tag: v2.8.7 MDL-50652 workshop: Workshop module allows duplicated ID number