Author: Dan Marsden
MDL-31652 SCORM - hide updatefreq setting and remove it if not required.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=6d65790c9872c9f19c9a37957da12b803d700b09
http://github.com/moodle/moodle/commit/6d65790c9872c9f19c9a37957da12b803d700b09
+ 2.1 en [updatefreq_help,mod_scorm]