WelcomePage: Bring back the tutorials page

The tutorials page was removed during refactoring.

Change-Id: Iec779d4fcf86f1807e17a5be775698b64ce16655
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/qtsupport/qtsupportplugin.cpp

@@ -83,6 +83,8 @@ bool QtSupportPlugin::initialize(const QStringList &arguments, QString *errorMes
     addAutoReleasedObject(welcomePage);
     welcomePage->setShowExamples(true);
 
+    welcomePage = new ExamplesWelcomePage;
+    addAutoReleasedObject(welcomePage);
     GettingStartedWelcomePage *gettingStartedWelcomePage = new GettingStartedWelcomePage;
     addAutoReleasedObject(gettingStartedWelcomePage);
 #endif