QmlWizards: Use 'QtQuick 1.0' namespace

Use the 'QtQuick 1.0' namespace introduced in 4.7.1. This makes them in
line with the examples/demos we ship in the SDK, but breaks for 4.7.0
(e.g. N900).

Task-number: QTCREATORBUG-3243

src/plugins/qmlprojectmanager/qmlprojectapplicationwizard.cpp

@@ -114,7 +114,7 @@ Core::GeneratedFiles QmlProjectApplicationWizard::generateFiles(const QWizard *w
         QTextStream out(&contents);
 
         out
-            << "import Qt 4.7" << endl
+            << "import QtQuick 1.0" << endl
             << endl
             << "Rectangle {" << endl
             << "    width: 360" << endl