Make sure QtQuick2 plugin is installed into right directory

Task-number: QTCREATORBUG-9229

Change-Id: I0ec3fef8cdc795f041c7ec39c1fd6b68a138046f
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
Reviewed-by: Michael Brasser <michael.brasser@live.com>

share/qtcreator/templates/wizards/qtquick2-extension/project.pro

@@ -27,7 +27,7 @@ OTHER_FILES = qmldir
 
 qmldir.files = qmldir
 unix {
-    installPath = $$[QT_INSTALL_IMPORTS]/$$replace(uri, \\., /)
+    installPath = $$[QT_INSTALL_QML]/$$replace(uri, \\., /)
     qmldir.path = $$installPath
     target.path = $$installPath
     INSTALLS += target qmldir