Fix File/New in the deployment folders.

That is tell the user that those files need not be added to any project,
and show "<Implicitly Add>" for them on the last wizard page.
This fixes Add/New for the QML/OTHER_FILES folder structure, except for
the virtual folder itself.

Reviewed-By: Jarek Kobus <jaroslaw.kobus@nokia.com>

src/plugins/qt4projectmanager/qt4nodes.h

@@ -154,6 +154,8 @@ public:
 
     void folderChanged(const QString &folder);
 
+    bool deploysFolder(const QString &folder) const;
+
 protected:
     void clear();
     static QStringList varNames(FileType type);