Author: Tim Hunt
MDL-38538 quiz autosave: fix language string.
This feature does not actually provide spiritual salvation.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=000fbcf2bd95bdc25850ffc9ada8ab435e49a0cb
http://github.com/moodle/moodle/commit/000fbcf2bd95bdc25850ffc9ada8ab435e49a0cb
+ 2.5 en [autosaveperiod_desc,mod_quiz]