Show/hide scopebar with toolbar

When showing / hiding the toolbar we also show / hide
the scope bar. This is so when in train mode and you go
full screen it is possible to hide all ornamentation.

This will become a moot point when the scope bar is
replaced with 'appstore style icons' in the toolbar
to switch between home, analysis, train etc.

src/MainWindow.cpp

@@ -627,8 +627,14 @@ MainWindow::showSidebar(bool want)
 void
 MainWindow::showToolbar(bool want)
 {
-    if (want) head->show();
-    else head->hide();
+    if (want) {
+        head->show();
+        scopebar->show();
+    }
+    else {
+        head->hide();
+        scopebar->hide();
+    }
 }
 
 void