Author: Cameron Ball
MDL-54802 mod_quiz: Improve validation when editing a quiz uusing require passing grade
When editing a quiz that is using the require passing grade completion method,
the grade to pass cannot be zero. Since the completion method is locked we
cannot recommend that the completion method is changed (as we do when the quiz
is being created). Instead we have to inform the user that the grade to pass
must not be zero.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=331613ddb178c9e0fc095430dc54e565ffd57da9
http://github.com/moodle/moodle/commit/331613ddb178c9e0fc095430dc54e565ffd57da9
+ 3.0 en [gradetopassmustbeset,mod_quiz]