Developer credits
Git commits in Moodle 3.0.0 by Daniel Kosinski
commit fd14eb5c401c729d2ffa34f94870001f6f453279 Author: Daniel Kosinski <de.kosinski@gmail.com> Date: Fri, 27 Feb 2015 04:42:53 +0800 Tag: v3.0.0-beta MDL-46705 admin: Check if course with same shortname already exists