Worker: Added option for maximum threads that are started; changed handling of thread negotiation from random numbers to job pids and considering the started threads
Updated BaF2 detector name in Pi0Compton class
Improved set of Monte Carlo configs... again

I have again updated the 'standard' MC configs. Lines like 'Energy-Scale' are required for MC data otherwise the resulting physics distributions will not be comparable to real data. I have set values such that the invariant mass of simulated neutral pion invariant mass reconstructs normally. I then checked a missing mass and the reconstruction looks normal.