Author: David Mudrak
MDL-29135 Reworded login prompt with SSO over MNet enabled
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b9720b8869b55b48cde9803ca8b44bba006b2faf
http://github.com/moodle/moodle/commit/b9720b8869b55b48cde9803ca8b44bba006b2faf
+ 2.0 en [potentialidps,core_auth]