Git commits in Moodle 2.3.8 by Gilles-Philippe Leblanc

commit 96b821e12617fb144febd4149502ff1505e0c596
Author: Gilles-Philippe Leblanc <gilles-philippe.leblanc@umontreal.ca>
Date:   Thu, 09 May 2013 23:42:20 +0800
Tag:    v2.3.8

MDL-38239 gradebook: Importing grades from a .txt file with commas for decimals causes an error