Developer credits
Git commits in Moodle 2.3.2 by Justin Filip
commit 44ec173ea8fea922f191508d317ab6f5d682f952 Author: Justin Filip <jfilip@gmail.com> Date: Sat, 03 Dec 2011 03:55:27 +0800 Tag: v2.3.2 MDL-29598 backup Check whether a grade_letters record exists before trying to insert a new record