SimConfig::Save not implemented

[uschille]

This method seems to only exist as a prototype.

I am wondering if it can be safely removed along with pathManager::SaveConfiguration (this design will always remain a mystery). That method is the only one that makes it necessary to include SimConfig.h.

I would suggest to make the whole PathManager an argument to the constructor of SimConfig, (this would require changin all the calls in the unittests) such that the path to the observable filenames can be initialized correctly during instantiation of SimConfig (what are the New()-new()-Init() shenanigans?).

Perhaps even better to encapsulate the PathManager in SimConfig. So we could scrap the ugly for loop from SimulationMaster.cc and potentially refactor the LbDataSourceIterator.