Code review comment for lp:~lifeless/launchpad/foundations

Stuart, I've updated this with a patch to raise the default timeout to
12 (stagings current timeout) and to separate out the
graph capping (50% above timeout : we regularly go up to this or
higher due to the way the timeouts work), and the stddeviation
calculations : our numeric stats were being distorted by the
calculations to make the histograms nice.

Thanks,
Rob