* This was an approach to avoid registration of "local signals"
* that part DID NOT work as planned, as all object's signals are registered
* the refactoring itself nevertheless is NOT a bad idea and has been kept
* as the audio context has this special "concept" and CAfvClient can run on both sides (proxy AND impl.side)
In same step cleaned up contexts a bit
* added function for model set strings
* renamed functions to getModelSet... instead of installed models (the set is smaller and is what we want to use with DBus)
* signal when debug/log flags changed
* removed some \copydoc
* allow to enable/disable rev.lookup/matching messages
* removed reload model function (dangling)