Updated PLUME decoding in HLT2
Changed/added some constants to reflect the changes needed for the updated PLUME decoding in HLT2.
Added also to the PlumeAdc
object the possibility to store a pedestal value and removed any reference to coincidences, as they are not used anymore.
This MR is needed to allow Rec!3748 (merged) to work properly.
Edited by Fabio Ferrari