adding a new bunch of histograms
with these commit more histograms are added for the MDT DQ raw monitoring and a few bugs are fixed. Bug fixes include :
- Fix calculation of number of MDT chambers with high occupancies (before estimated) bigliett/athena@62ae9505
- Fix array indexes of array of structures to better match the Muon Spectrometer layout bigliett/athena@62ae9505
Edited by Michela Biglietti