Git commits in Moodle 1.9.13 by Joseph Rezeau

commit 96aec10056ca6aae67e4cc6bac83c40074d970e5
Author: Joseph Rezeau <moodle@rezeau.org>
Date:   Mon, 04 Jul 2011 22:50:09 +0800
Tag:    v1.9.13

MDL-27716 qtype_multianswer make the work 'Close' in the overlib popup translatable.