Author: Ankit Agarwal
MDL-28965 administration: Updating description string for the setting navshowallcourses
http://git.moodle.org/gw?p=moodle.git;a=commit;h=89eee2f36d2b2307ee2fc2cd734160ebe5ea3dc9
http://github.com/moodle/moodle/commit/89eee2f36d2b2307ee2fc2cd734160ebe5ea3dc9
+ 2.4 en [confignavshowallcourses,core_admin]