regenerate the translation files, no real change
Release 2.4.2

  * Engine:
    - Reduce the load to the github servers by not pushing more often
      than once every 30mn (or when the client quits). The PLM-data
      repository was disabled by github robots due to the excessive
      load. We don't want it to happen again...
  * Improved translations:
    - Brazilian Portuguese: Missions at 45%
  * Pedagogical content: fixing the issues opened by our students.
    #221: fix templating to now show crude details to youngsters
    #218, #225, #227: typos in French
    #226: Course: nice error message when running more than asked
    #228: CourseForest: nice error message when running more than asked
    #230: Course*: forbid backward() too. forward() must be called.
    #232, #233: Methods: show the code calling goAndGet() in languages
          allowing methods to be embeeded within methods (scala/python)
          Should be more robust to students misuses now.