2015-06-14: * is replaced by a space in texmath (ER)
2015-06: the new modules userscore and usermanage are now operational.
2015-06: Change in the intromenu of OEF exercises
2015-06: Small changes in the notation in OEF exercises.
2015-05: [r8992] comments on participant can be different in each class
 of the structure of portail or groupement (FG)
2015-05: [r9060] Add possibility to insert all exercises of a module
  in a sheet