GEN-SIM recycle input commands also for particle guns
HALO_13: added dedicated steps (different from cosmics) to pick up the GT auto:upgradePLS1
GT for beam-halo@13TeV now consistent
remove legacy comment; wf 1311 MinBias_13 treated as postLs1 in all steps
38T_PostLS1 : active in step1; commented in subsequent steps => needs GEN-SIM from 620_patch1 to be consistently activated
Merge pull request #683 from franzoni/13TeV-MC-relvals-pre8ReCycle-70x-gf4

13 TeV mc relvals pre8 re-cycle 70x gf4