PID LUT from TH2F

PID LUT from TH2F
    - Add Setter for PID LUT from 2-dim histogram
    Bugfixes
    - Fix access via ADC column
    - Fix deflection sign in GTU TMU
    Add PID calculation for GTU tracks
    Updates for GTU simulation
    - Debug output in TMU
    - setting of correct HC id in gtuSim
    Removal of AliTRDmcmTracklet
    Bugfixes in visualization
    - correct setting of HC id in trd_tracklets.C
    - change sign of tracket deflection
    - change colour of tracklet MCM in visualization
    - check before destruction of children
    Additional baseline, zs-reading and check for no. of timebins
    - Additional baseline to be added/subtracted during reading/writing
    - Read back the ZS mapping
    - Check for no. of timebins
    Included changes from gridikp
    - Add GetPID(q0, q1)
    - add NHits ... to trackletMCM
    - add default PID LUT
    - add possibility to change LUT
    Adaptation to latest fitred.asm
    - decimal places for ndrift
    - calculation of y-offset, scaleY, scaleD from MCM position
    - corrected sign of deflection
    - changed position where deflection cut is applied
    - changed calculation of min/max-deflection