Changing grading option for replay may cause abnormal behaviour

[Drumor]

While replaying submission with another grading option (from last to best) and selection "only evaluation submission", INGInious only reevaluate the best submission, which is the expected behavior but may be disturbing for some user (who expect a full replay). Thus, it would be interesting to set a feedback message on the admin page to prevent users of this.

[ogoletti]

There are some options to do this:

1. when changing the grading option (from best to last) the transition is easy and inginious could propose to update the "evaluation submission".
2. when changing the grading option (from best to last) the transition is more costly but inginious could propose to regrade all submissions to be able to indeed update the "evaluation submission"

That said, it should be clear, when changing the grading option if the "evaluation submission" is in a coherent state or not.