prepare to store Higgs truth info

- rename m_isWhSample -> m_isHsignalSample
- add SusyNtMaker::isHiggsSignalSample()
- delete-trailing-whitespace
- store h decay also for hlfv samples (untested, might not be able to find tau+l)
SusyNtMaker: store H truth particles

Needed for H pt reqeighting for HLFV.
Tested with
- 189890.PowHegPythia8EvtGen_AU2CT10_ggH125_taumu
- 169670.MadGraphPythia8_AU2CTEQ6L1_ggH125_taumu
Requires SusyNtuple-00-01-14
Merge pull request #22 from gerbaudo/store-h-truth-hlfv

Store h truth hlfv