automatic update of engine's translation files
Release 2.4.4

  * Engine:
    - #257: used to write the bad information when passing an exercise
      placed on the top of a sub-menu, resulting in the DONE mark not
      being retrieved when loading the session afterward.
  * Worlds:
    - #280: Buggles: Don't display the error dialog more than once when
      dropping the baggle that you don't have.
  * Pedagogical content:
    - #274: BDR: citation of Java instead of [!theLang] in mission
    - #289: indexOfMaxValue: add a table with all negative numbers to
      catch people initializing maxValue = 0
    - #248: Misleading mission text in French
    - #285: TurtleArt with 20 sides should not be called Polygon15