Author: Helen Foster
MDL-24180 new help string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2168d332dec10279f19aa75dcc88823b9ea5746f
http://github.com/moodle/moodle/commit/2168d332dec10279f19aa75dcc88823b9ea5746f
+ 2.0 en [availablefrom_help,core_condition]