Fix assignment and perf. improvement in CbmMcbm2018RichPar

2nd requirements MR for !625 (merged), to be rebased and merged after !641 (merged)

In CbmMcbm2018RichPar, add explicit assignment OP constructor + replace map with vector when possible

• Introduce LoadInternalContainers method for setting all memberss derived from other members
• replace fToTshiftMap map with vector as continuous array with always successive keys (faster access)
• add the copy and assignment constructors
• Add a Print method