Git commits in Moodle 2.2.5 by Gilles-Philippe Leblanc

commit 751f5b0ae938b88fea93759e29b3c1149844f620
Author: Gilles-Philippe Leblanc <gilles-philippe.leblanc@umontreal.ca>
Date:   Fri, 06 Jul 2012 05:41:19 +0800
Tag:    v2.2.5

MDL-33822 SCORM Interactions report - fix formatting of empty cells.