Bug 2524 - ENH: Macros "OK" button is confusing - doesn't do "what it says on the tin"

Removed redundant OK button.
Also improved positioning of buttons.
Also fixed issue where canceling change appeared to not be respected.  (It was being respected, but display was not being refreshed)

src/BatchProcessDialog.h

@@ -94,6 +94,7 @@ private:
    void AddItem(const CommandID &command, wxString const &params);
    bool ChangeOK();
    void UpdateMenus();
+   void ShowActiveMacro();
 
    void OnMacroSelected(wxListEvent &event);
    void OnListSelected(wxListEvent &event);