Fix Dimension value format with Qt5
Fix Dimension value format with Qt5

- Dimension values were displayed as zero for locales
  with "," decimal point in Qt5.

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master