Mark Andrew Owen authored Mar 16, 2020 and Frank Winklmeier committed Mar 16, 2020

What I changed:
- JetChainConfiguration now represents the configuration of all the jet parts of the chain (e.g. j80_j60) rather than just a single leg.
- Because of this GenerateJetChainDefs no longer splits the chain defs.
- Similarly, in GenerateBjetChainDefs, the jet part of the chain is created from the unsplit chain def.
- The extractRecoDict function in JetRecoConfiguration now handles a vector of chain parts and checks the settings are consistent in the different parts.