Revised language from "auto"/"strict" to Q=1, Q=2, Q=1+2.

Some of these plots might make it into the final figure.
Replaced an std() after a median with an rb.mad() after a median.

Medians deserve MAD so this is better.
Now I include MAD uncertainties in that one plot.
I wrote an ipython notebook that uses some of these scripts.
Now I make the megeath hist-plotting functions print sample sizes.

This is to address swolk's issues about sample sizes and medians.