Author: Marina Glancy
MDL-49953 enrol_cohort: correction to string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5894432c5037f4f6fb82acc12ec9a19e9694546e
http://github.com/moodle/moodle/commit/5894432c5037f4f6fb82acc12ec9a19e9694546e
+ 2.9 en [defaultgroupnametext,enrol_cohort]