Remove Apply-Macro from Tools menu.

Done by giving Macros... dialog an Expand / Shrink button
so that we can use it as just an apply-to-projects dialog, if we want.
The dialog is modal, and can be kept open whilst we work.  So for example
we could put useful presets into it as macros.

src/ShuttleGui.h

@@ -119,6 +119,8 @@ public:
    void StartHorizontalLay(int PositionFlags=wxALIGN_CENTRE, int iProp=1);
    void EndHorizontalLay();
    void StartVerticalLay(int iProp=1);
+   void StartVerticalLay(int PositionFlags, int iProp);
+
    void EndVerticalLay();
    wxScrolledWindow * StartScroller(int iStyle=0);
    void EndScroller();