Provide a way for students to read their copy (questions and answers) after submission

[adrienjoly]

pour prochain partiel: trouver un moyen pour que les etudiants puissent discuter des questions / réponses après l'examen. => copie de la copie après rendu?

[adrienjoly]

So far, the evaluation scripts logs students' submitted content + stdout of their evaluation to stdout, eval.log or *.txt files. => the returned copy is a plain text log that does not contain the text of questions to which answers correspond. (which would be handy for review, if variants were defined in the exam)

Possible solutions:

• make eval scripts render well structured markdown content that would also contain questions
• or refactor eval scripts so that they delegate the rendering of results to their caller (i.e. return data in an object instead of logging to stdout)

[adrienjoly]

Closing in favor of #58.