Removing old implementation of photon preselection per Pasquale's
suggestion
First placeholder for setting photon isolation maps
Adding a map of (vtx, ChargedPFIso) to the photon object

Compile but crashes at runtime
Now runs correctly (and output correct info)
Implementing preselection as an EDFilter CandViewSelector

incomplete implementation due to crash at run time of the cut parser
when processing getChargedPFIso02(vtx)
new class with photon id tools
added lines in gitignore
added condition on particle id
First implementation of pfIsoChgWrtVtx and pfIsoChgWrtAllVtx with pat::Photon instead of flashgg::Photon for now
fixed underfined reference error
finished function for iso wrt all vertices
implemented function for pf ecal iso
fixed naming conventions
merged M's and C's changes into one (compiling) version: skeleton MVA calculation implemented
use <vertex,float> maps for isolation and mva, pass a flashgg::photon& to mva function
commit changes to classes.h and classes_def.xml to merge with official package
fixed runtime errors (hopefully)
added rho variable down to photon id MVA calculation (*not* as flashgg::photon member)
added cfi file for tk-to-vtx map
switched to vertex-candidate map written by Seth