Cleaner version of added born-naked-dressed gen electron variables.
New gen-level phistar variables added (again).
Clean up new Born/Dressed/Naked electrons

Various cleanups including:
    * Removing trailing whitespace
    * Standardizing if/else placement and adding brackets
    * Using PDFID enums instead of integers
    * Adding some comments
    * Fixing phi plot binning
    * Fixing charge plot binning

Additionally, fixed a bug that was introduced which checked the wrong
electron pointers before using them to fill plots.
Added the born/naked/dressed phistar to the RooDataSets.
Remove FollowElectron, add GetNakedElectron

FollowElectron was passed a pointer to a pointer and moved that pointer
to point to the naked electron, while returning a deep copy of the born
electron the pointers originally pointed to.

GetNakedElectron instead takes a pointer to a born electron, and returns
a pointer to the naked electron. It does not change the input born
electron at all, and makes no copies.
Dressed Electrons now only use their own photons

Dressed Electrons now only sum photons that came off the same electron,
not just any photon. This is how the process is performed in
AN2013_420_v15 Section 10.1.
Add clean up of new Phi* variables in RooWorkspace
Add naked and born Phi* to reco RooWorkspaces

The reco RooWorkspace for MC events now has the Truth naked and born
Phi*'s included.
Add total cross-section calculator script
Clean up total_cross_section.cpp

Remove unused includes and set the mass range as a variable so that it
is set in one place instead of three.
Match ATLAS binning in Phi* plots

We now use the ATLAS binning in our histograms instead of trying to
match it later with rebinning.
Adding ZFinderTree again

With the new variables that are going to be needed, tuples are going to
be a better option than RooDatasets.
Fix ordering of variables in ZFinderTree

Larger variables must be packed into the tree first, so the event weight
must go before the charge variables.
Add seperate file for tuples

The configuration files now specify a specific tuple file (or disable
writing of tuples with "NONE"). No tuples are currently implemented, but
the file now exists for them.
Remove ZFinderTree