Fixed that outscattering failed to register in TallyBank before.
Updated outscattering tallying method.

- Outscattering reaction rates were constructed as a matrix before
  which is not true -- there should really be one value at each
  energy level representing the amount neutrons scattering out
  of this energy group, thus I change outscattering tallies back
  into a regular array.
- Though keep in mind that outscattering really only makes sense
  in the two group cases. Beyond two groups, I am not sure what
  outscattering means anymore.