adapted miniAOD to tau POG needs
adapted pat tau producer to save only info available in AOD
loosened default tau pt cut to 18 GeV in order to make possible studies of tau energy scale
not re-running full PFTau sequence (just like with cmsDriver)
avoid to flood prunedGenParticles with pythia8 intermediate showering stuff
Update tau ID to POG recommendation (fix TQAF unit test)
Import substructure modules
reconfigure miniAOD for substructure jets: add CA8 pruned jet mass and cmsTopTagPFJetsCHS
CA8 --> AK8 switch, as requested by Sal. Also, add Filtered and Trimmed jet masses in addition to Pruned one (and all for AK8 instead of CA8)
Remove rho's that are not filled in AOD (even if the branch exists)
AK4PFchs corrections from GT's PLS170_V7AN1, PLS170_V6AN1, GR_70_V2_AN1
Merge pull request #4204 from gpetruc/miniAOD-from704-part4

miniAOD part 4 (7.0.X)