Adding OTU signifigance and Phyla plots

Test code to follow.
Added comma seperated list; cleaned up
Updated per Yoshiki and Adams comments
added chmod
Changed BMI finding capabilities and number columns plotted
Updated plots with no legend option and no border

Plots can be generated with optional legend. Blocks have no black
border (cleaner viewing of small segments).
Updated Tables and formatting

Rewrote list and table formatting code;
t-test also generates sorted abundance table and absence list per
sample.
LaTeX tables formatting has more options.
Removed printing labels
Updated plot to include labels
Added latex macro functionality
Includes LaTeX macro defination
Changed font to Helvetica and set constant axis dimensions
Added red text for unique taxa
plots without axis labels
adjustments to text coloring code
fixed permissions

unlike flags, permissions are granted with a "+"
Merge pull request #9 from JWDebelius/master

Updated Plotting and Comparisons