[12gevmoller_sim] [EXTERNAL] [JeffersonLab/remoll] 02c523: add 2d source plots

[cipriangal]

  Branch: refs/heads/feature-target-shield-design
  Home:   https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=-0uahHXTLsQsllHBZNHgOynLaY6DUxqehsUJ91-BlNY&m=Pymkiz3vMadVOzD3Z-IGdMGbnQu2zPHWVZQN9QpIRiE&s=T-CF-OY3bsjhIc9Td3NNqTLCEvDWCEOHK3uCayy-44s&e= 
  Commit: 02c523d23d165489927ee8c604120e9bc6189a07
      https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll_commit_02c523d23d165489927ee8c604120e9bc6189a07&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=-0uahHXTLsQsllHBZNHgOynLaY6DUxqehsUJ91-BlNY&m=Pymkiz3vMadVOzD3Z-IGdMGbnQu2zPHWVZQN9QpIRiE&s=A0v1agrZw_e24lHmxvlXzE72QhWh4Tt7pb_eNDVzhCM&e= 
  Author: Ciprian Gal <ciprian at jlab.org>
  Date:   2021-02-10 (Wed, 10 Feb 2021)

  Changed paths:
    M analysis/flatHEdetHistos.h
    M analysis/skyShldAna.C

  Log Message:
  -----------
  add 2d source plots