Author: Helen Foster
MDL-47800 admin: improved strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ee7a1a546c0ba5bbc16710baf8dbe82041d2d2ae
http://github.com/moodle/moodle/commit/ee7a1a546c0ba5bbc16710baf8dbe82041d2d2ae
+ 2.9 en [passwordchangelogout,core_admin]
+ 2.9 en [passwordchangelogout_desc,core_admin]