Author: Sam Hemelryk
MDL-29093 - Authentication improved new setting name and strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2c7a91475f157c0d6f6bde0691217dbc140c4d88
http://github.com/moodle/moodle/commit/2c7a91475f157c0d6f6bde0691217dbc140c4d88
+ 2.2 en [authpreventaccountcreation,core_admin]
+ 2.2 en [authpreventaccountcreation_help,core_admin]
- 2.2 en [authonly,core_admin]
- 2.2 en [authonly_help,core_admin]