Changed normOccupancy to emptiness and fullness.  Will update these two with each call
to push nucleon.  Fullness defined by (2J+1)v^2 = n where n is the occupancy and v^2 is the
fullness.  With each push nucleon call it sets fullness and occupancy/maxoccupancy.  The set
functions for each also sets the other as 1-theOneBeing set.  Set fullness to 0.75 emptiness will be
set to 0.25.

Changed Nucleus GetShell to GetZShell and GetNShell.  Add Link Def line for Vector<Shell> so it create a
Dictionary of those