Rename remaining orbitals and associated files to wavefunction components

Please complete the transition from the very confusing historical "orbital" nomenclature to WFC abbreviation. WFC is a little cryptic but not as confusing as orbital due to the multiple meanings of that term.

based on `find . -name "*Orbital*"` at least the following need renaming and the source + define include protection updating:
```
./src/QMCWaveFunctions/Jastrow/J1OrbitalSoA.h
./src/QMCWaveFunctions/Jastrow/OneBodyJastrowOrbitalBspline.h
./src/QMCWaveFunctions/Jastrow/TwoBodyJastrowOrbitalBspline.h
./src/QMCWaveFunctions/Jastrow/J2OrbitalSoA.h
./src/QMCWaveFunctions/Jastrow/OneBodyJastrowOrbitalBspline.cpp
./src/QMCWaveFunctions/Jastrow/TwoBodyJastrowOrbitalBspline.cpp
./src/QMCWaveFunctions/Jastrow/DiffOneBodyJastrowOrbital.h
./src/QMCWaveFunctions/Jastrow/DiffTwoBodyJastrowOrbital.h
./src/QMCWaveFunctions/Jastrow/JeeIOrbitalSoA.h
./src/QMCWaveFunctions/OrbitalSetTraits.h
./src/QMCWaveFunctions/ConstantOrbital.h
./src/QMCWaveFunctions/LinearOrbital.h
```