(#612) Added time history plot as a dockwidget

ApplicationCode/UserInterface/RiuMainWindow.h

@@ -42,6 +42,7 @@ class RiuProcessMonitor;
 class RiuResultInfoPanel;
 class RiuViewer;
 class RiuWellLogPlot;
+class RiuTimeHistoryQwtPlot;
 
 namespace caf
 {
@@ -198,6 +199,8 @@ private:
     RiuResultInfoPanel* m_resultInfoPanel;
     RiuProcessMonitor*  m_processMonitor;
     
+    RiuTimeHistoryQwtPlot* m_timeHistoryQwtPlot;
+    
     QMenu*              m_windowMenu;