In case the model name is empty, xbus falls back to its former
behaviour and lets libxplanemp do the matching. If aircraft matcher
does provide a model this will be used instead.
Until model mapping database is ready, a dummy provider has been added.
Hence CAircraftMatcher will always return a default model.
* only init QDbusServer for P2P
* changed init order of contexts in runtime
* use "fake" signal to call setComVoiceRooms (remote in GUI)
* added slot to change voice room callsign
* used "org.swift" instead of "net.vatim" (just style)
* used const QString for serviceName
* added correct copyright header (just style)
