Heppy: use tfileservice in NumpyTreeProducer when available
add missing parameter in default config
Merge pull request #8 from gpetruc/heppy_7_2_2_patch2

Further Heppy bugfixes
Merge pull request #9 from arizzi/heppy722patch2

Possibility to use TFileService file in TreeProducers and one simple fix in JetAnalyzer
Merge remote-tracking branch 'cbernet/heppy_7_2_2_patch2' into heppy_7_2_2_patch2