Application Scaling for MSW: Added rescale function for DoubleSlider (from Preview), ObjectList, ManipulationPanel and SettingsPanel

+ Set wider default size for Preset Comboboxes from Tabs (#2023)

src/slic3r/GUI/GUI_Preview.hpp

@@ -120,6 +120,8 @@ public:
     void reload_print(bool keep_volumes = false);
     void refresh_print();
 
+    void rescale_slider();
+
 private:
     bool init(wxWindow* parent, Bed3D& bed, Camera& camera, GLToolbar& view_toolbar, Model* model);