Author: ferran
MDL-86245 core_course: improve activity chooser search
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a6ff943f84050aecd379fdc9e78648cede49b7b6
http://github.com/moodle/moodle/commit/a6ff943f84050aecd379fdc9e78648cede49b7b6
+ 5.1 en [noresultsfor_help,core]