Author: Simey Lameze
MDL-54802 mod_quiz: Add validation to require passing grade greater than 0
This commit adds a form validation to prevent the creation of quizzes
using zero or null grade to pass when using require passing grade.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=10d480aefc28fd4e93af30cc5ed5a503aa3a1c61
http://github.com/moodle/moodle/commit/10d480aefc28fd4e93af30cc5ed5a503aa3a1c61
+ 3.1 en [gradetopassnotset,mod_quiz]