[Nepomuk] Nepomukcontroller rewritten in QML

[Jörg Ehrichs]

>
> Nicely done! I did a quick look over the code and you're still using
>
> QDBusConnection::sessionBus().interface()->isServiceRegistered
>
> which unfortunately is a blocking DBus call. You can however replace it with
> something like [...]
>

Thanks a lot for the hint. I've change my code to use these async calls now
and do the initialization inside the slot to avoid any problems.