[#39] I reduce the timer blockUI from 7s to 3s: it was really too long...
[#39] number of questions change color if not O, score for each students operational, best score in gold
Merge commit 'ebbe82e' into dev
Merge pull request #83 from chrqls/dev

[#39] Updating web client for teacher (0.8.4) and a timer in webapp for student