Author: Alexander Bias
MDL-60710 course: Refine strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=3ebba90a6b1d1c8fa7ac0004650291f732b8fe50
http://github.com/moodle/moodle/commit/3ebba90a6b1d1c8fa7ac0004650291f732b8fe50
+ 3.6 en [coursecontactduplicates_desc,core_admin]