UI Nits: Ride list horiz scrollbar

The ride list / navigator gets a horizontal scrollbar
every time it is shown as the columns are resized but
not taking into account the need for a vertical scrollbar.

The reasons behind this are more complicated but this
patch fixes this annoyance.

src/RideNavigator.cpp

@@ -349,7 +349,7 @@ void RideNavigator::setWidth(int x)
 void
 RideNavigator::showEvent(QShowEvent *)
 {
-    resetView();
+    //resetView();//XXX cocks up on sidebar?
     init = true;
     setWidth(geometry().width());
 }