Author: Mihail Geshoski
MDL-67263 course: Add search functionality in the activity chooser
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f152b71dd4281c3fd80052647611b673be945837
http://github.com/moodle/moodle/commit/f152b71dd4281c3fd80052647611b673be945837
+ 3.9 en [clearsearch,core]
+ 3.9 en [resultsfound,core]
+ 3.9 en [searchactivities,core]