Don't close save box when raising "To save drag..."
Detail: The behaviour of Draw, Edit and Paint is for the save box to remain open after reporting "To save, drag...". This commit changes SaveAs to do the same.
Changed Germany and UK Res files so that all "Save" buttons have local flag ticked, otherwise the box closes regardless of wheather SaveInternal_CloseWhenFinished is used. In events.c, event_action_button_save, when a filename without path has been detected, clear the CloseWhenFinished flag, so that the box remains open.
Admin: The correct behaviour was observed in a Res file loaded with ResTest.