ENH: Fixed broken signal/slot connections.

Code/Application/Monteverdi2/mvdMainWindow.cxx

@@ -1331,7 +1331,7 @@ MainWindow
     QObject::connect(
       m_ImageView,
       SIGNAL( RenderingContextChanged( const PointType&, double ) ),
-      vectorImageModel,
+      model,
       SLOT(  OnRenderingContextChanged(const PointType&, double ))
       );
     }

Code/Common/Gui/mvdHistogramWidget.cxx

@@ -282,7 +282,7 @@ HistogramWidget
   );
   QObject::connect(
     m_PlotPicker, SIGNAL( selected( const QwtArray< QwtDoublePoint >& ) ),
-    this, SLOT( OnSelected( const QwtArray< QwtDoublePolygon >& ) )
+    this, SLOT( OnSelected( const QwtArray< QwtDoublePoint >& ) )
   );
 }