20221019 [17195] add a link to come back to caller page after sendbug
20221019 [17195] no more ariane link
------------- version 1.02 
20220520 [r16701] bugfix bad sendbug log in case of exercise in an exam
------------- version 1.01 
20220302 [r16386] can sendbug on a student examlog exercise
20211210 [r16270] add exolog file to mail
20191210 [r14499] first publication