Developer credits
Git commits in Moodle 2.4.6 by Eloy Lafuente (stronk7)
commit 178af4770e250504a307e5985158d039c15c1026 Author: Eloy Lafuente (stronk7) <stronk7@moodle.org> Date: Fri, 06 Sep 2013 17:20:19 +0800 Tag: v2.4.6 MDL-41623 ensure all links are valid urls