Column Chooser Still Too Big

.. made font smaller so now just about squeezes onto
   a netbook 800x600.

.. we need to make it a scrollarea so it can be much
   smaller.

src/RideNavigator.cpp

@@ -1037,7 +1037,7 @@ ColumnChooser::ColumnChooser(QList<QString>&logicalHeadings)
     buttons->setContentsMargins(0,0,0,0);
 
     QFont small;
-    small.setPointSize(10);
+    small.setPointSize(8);
 
     QList<QString> buttonNames = logicalHeadings;
     qSort(buttonNames);