Author: Ankit Agarwal
MDL-22895 scorm: Fixed up issues with graph report
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e2f6cb436ad36176731b0c0e87ae3d637a25b500
http://github.com/moodle/moodle/commit/e2f6cb436ad36176731b0c0e87ae3d637a25b500
+ 2.3 en [participants,scormreport_graphs]
+ 2.3 en [pluginname,scormreport_graphs]
+ 2.3 en [percent,scormreport_graphs]
+ 2.3 en [invaliddata,scormreport_graphs]