Git commits in Moodle 2.7.6 by Dan Marsden

commit 4d6cfa8e4f6948be0ace93ba1befef195a0b3ea3
Author: Dan Marsden <dan@danmarsden.com>
Date:   Thu, 26 Feb 2015 15:51:42 +0800
Tag:    v2.7.6

MDL-49303 mod_scorm: Initialise student preference on re-entry.

commit 5a96b851a2b8cb3973b360f864daf711be735cbf
Author: Dan Marsden <dan@danmarsden.com>
Date:   Fri, 20 Feb 2015 09:37:00 +0800
Tag:    v2.7.6

MDL-46390 mod_scorm: Find correct sco to launch when org based sco is selected

commit 772ec0a6e34f23c0ccd6d55219be5b7316e41c16
Author: Dan Marsden <dan@danmarsden.com>
Date:   Fri, 20 Feb 2015 08:39:19 +0800
Tag:    v2.7.6

MDL-46408 mod_scorm: check param is set before using.