Header cleanup in QML/JS and project manager.

Change-Id: I40b41a3ef6189a99272e345e3251680edccecca0
Reviewed-on: http://codereview.qt.nokia.com/3215
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/qmljstools/qmljsmodelmanager.h

@@ -37,7 +37,7 @@
 
 #include <qmljs/qmljsmodelmanagerinterface.h>
 
-#include <cplusplus/ModelManagerInterface.h>
+#include <cplusplus/CppDocument.h>
 
 #include <QtCore/QFuture>
 #include <QtCore/QFutureSynchronizer>
@@ -50,6 +50,10 @@ class ICore;
 class MimeType;
 }
 
+namespace CPlusPlus {
+class CppModelManagerInterface;
+}
+
 namespace QmlJSTools {
 namespace Internal {