Cherry pick StdLooseDetachedTau changes (2016-patches)
Cherry pick of !889 (merged) (merged) (merged)
Added StdLooseDetachedTauNoPID, and updated StdLooseDetachedTau and StdLooseDetachedTauNonPhys. These updates should be added to 2016-patches, 2018-patches, and run2-patches.
FAO @dhill