PATCH: saving macro after query pasting

Hello.

Please see this patch. These are changes in the macros manage dialog:
- the "Save" button is enabled after any change in the query window
- RestorePosition() in the constructor
- unnecessary variable appQueryModify has been removed
- changed the condition that checks whether the title and query were
filled (method SetMacro())

Thank you.

--
Dmitriy Olshevskiy