* Remove option for exporting data in SupaVisio type
* Changing Prefs to use ijPrefs instead of system Prefs
  - using a nex parameter in ijPrefs names IBA.LAST_USED_DIR
  - using prefs to initiate default values for ROI in PIXE spectrum called
     - IBA.roi1.name / IBA.roi1.min / IBA.roi1.max, 1 being the index for this roi (10 ROI defined)