Author: Sara Arjona
MDL-48762 course: Different string if show/hide tasks are enabled
The help message for the Course start/end date will be different
when the show_started_courses_task/hide_ended_courses_task tasks
are enabled, to let add some reference to this feature.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=81d05b542ba2ad09b57f774b899d97b67d460deb
http://github.com/moodle/moodle/commit/81d05b542ba2ad09b57f774b899d97b67d460deb
+ 4.3 en [enddatewithtaskenabled,core]
+ 4.3 en [enddatewithtaskenabled_help,core]
+ 4.3 en [startdatewithtaskenabled,core]
+ 4.3 en [startdatewithtaskenabled_help,core]