Author: Andrea Bicciolo
MDL-38480_m24 Fix for messy usage of language strings in block course overview
http://git.moodle.org/gw?p=moodle.git;a=commit;h=704e2ecaaacf594bee69b1059cc9319e23bfa4eb
http://github.com/moodle/moodle/commit/704e2ecaaacf594bee69b1059cc9319e23bfa4eb
+ 2.4 en [activityoverview,mod_lesson]
+ 2.4 en [activityoverview,mod_scorm]