Make MDI Window icon different from main application icon

ApplicationCode/Resources/ResInsight.qrc

@@ -58,6 +58,7 @@
     <file>GeoMechCases48x48.png</file>
     <file>chain.png</file>
     <file>TileWindows24x24.png</file>
+	<file>Window16x16.png</file>
     <file>LasFile16x16.png</file>
     <file>WellLogTrack16x16.png</file>
     <file>WellLogPlot16x16.png</file>

ApplicationCode/UserInterface/RiuMdiSubWindow.cpp

@@ -41,6 +41,7 @@ RiuMdiSubWindow::RiuMdiSubWindow(QWidget* parent /*= 0*/, Qt::WindowFlags flags
     , m_normalWindowGeometry(QRect())
     , m_blockTilingChanges(false)
 {
+    setWindowIcon(QIcon(":/Window16x16.png"));
 }
 
 //--------------------------------------------------------------------------------------------------