Author: David Mudrak
MDL-30006 Workshop / Accumulative grading: force graders to actually pick a grade
This patch introduces a new hidden field with the value "-1". The grade
selectors are compared with this values and must be greater than it.
This should fit well for numerical grades with the range 0..x and scale
items with the range 1..x.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=112f7d41eaed73924716f5a19de79310f2367775
http://github.com/moodle/moodle/commit/112f7d41eaed73924716f5a19de79310f2367775
+ 2.1 en [mustchoosegrade,workshopform_accumulative]