JQ: Pedestal estimation no longer screws up for thin silicon due to triggering on noise as in #92.
JQ

-Cleaned up TPI::GetPedestal function
-TPI::GetPeakSample not simply uses std::max/min_element based on trigger polarity
-Changed constructor and destructor

This is related to issue #92 though the issue itself was solved already
JQ: Issue #92, third item on list
Merge branch 'feature/tpi_ampltiude_fix' into develop