[PartDesign] Fix and expose ViewProvider strings to translation

Closes https://github.com/FreeCAD/FreeCAD-translations/issues/24

src/Mod/PartDesign/Gui/ViewProviderMultiTransform.h

@@ -34,6 +34,7 @@ class PartDesignGuiExport ViewProviderMultiTransform : public ViewProviderTransf
 public:
     ViewProviderMultiTransform() {
         featureName = std::string("MultiTransform");
+        menuName = QObject::tr("MultiTransform parameters");
         sPixmap = "PartDesign_MultiTransform.svg";
     }