Author: Michael de Raadt
MDL-34779 settings: Updating lang string corrposnding to the fullnamedisplay setting
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b8cc0200640621e92f9c0cc709c7fd26b29d828c
http://github.com/moodle/moodle/commit/b8cc0200640621e92f9c0cc709c7fd26b29d828c
+ 2.3 en [configfullnamedisplay,core_admin]