Author: Huong Nguyen
MDL-80967 authentication: Fix language string and version pump
http://git.moodle.org/gw?p=moodle.git;a=commit;h=7d95aa4b9c112d6be99fad705f2621af565ad22a
http://github.com/moodle/moodle/commit/7d95aa4b9c112d6be99fad705f2621af565ad22a
+ 4.5 en [showloginform,core_auth]