Fixed errors in vis and analsysis

Fixed the legend errors in the box plot vis, and changed the matplot lib
to be imported only once.  There seems to a funky little error with the
min number of slices . . . as it doesn't have an effect.
Changed Stats

Used the pyevolve_graph.py to plot
Removed SASModel
Added a previous run read in

Added an intilization based on the previous run data as well as from a
directory.  The directory storage got very large, so I decided to cut it
down.