Switch to side-by-side view

--- a/src/qtgui/rclmain_w.h
+++ b/src/qtgui/rclmain_w.h
@@ -111,6 +111,7 @@
     virtual void adjustPrefsMenu();
     virtual void catgFilter(int);
     virtual void initDbOpen();
+    virtual void toggleFullScreen();
 
 signals:
     void stemLangChanged(const QString& lang);