Git commits in Moodle 2.8.4 by Dan Marsden

commit e1c81e528411e67042252c592554f7de98045796
Author: Dan Marsden <dan@danmarsden.com>
Date:   Thu, 26 Feb 2015 15:36:48 +0800
Tag:    v2.8.4

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


commit 2e12b4cffb66644fea028e905a167572365ff76e
Author: Dan Marsden <dan@danmarsden.com>
Date:   Fri, 20 Feb 2015 09:37:00 +0800
Tag:    v2.8.4

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


commit 4c30d78891253772207244888a5ec499e5966987
Author: Dan Marsden <dan@danmarsden.com>
Date:   Fri, 20 Feb 2015 08:39:19 +0800
Tag:    v2.8.4

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