Git commits in Moodle 2.5.1 by Nicolas Dunand

commit a2ec9613094088ec91426816c7af79f055181bda
Author: Nicolas Dunand <nico@kolya.ch>
Date:   Mon, 03 Jun 2013 14:13:19 +0800
Tag:    v2.5.1

MDL-32480 fix display of IMS content packages with external links