use postLS1 GT in prod workflows (step3Up2015Defaults used in PROD workflows)
lighter output of step3 for postLS1 workflows: GEN-SIM-RECO replaces FEVTDEBUGHLT
lighter output of step3 for postLS1 workflows: GEN-SIM-RECO replaces FEVTDEBUGHLT
remove relval_standard.py~ and relval_steps.py~
Merge pull request #2126 from franzoni/gt_PRODrelvals_CMSSW_7_0_0_pre12

Misc fixes -- postLS1 GT for prod + lighter output of step3 for postLS1