Make DolphinWX strings more like DolphinQt2 strings

Same as the previous commit, except I'm copying strings
in the other direction because the DolphinWX variants
of these strings could use some improvement.

Source/Core/InputCommon/ControllerEmu/ControlGroup/Slider.h

@@ -13,6 +13,7 @@ namespace ControllerEmu
 class Slider : public ControlGroup
 {
 public:
+  Slider(const std::string& name, const std::string& ui_name);
   explicit Slider(const std::string& name);
 
   void GetState(ControlState* slider);