version bump sdk

version bump pyramid

upgrade to newest buildout

light refactoring of buildout.cfg_tmpl

add setuptools to app.yaml
0.8.3 release

+upgrade sdk to 1.8.7

fix setuptools craziness with rod.recipe.appengine by pinning
setuptools in versions.cfg

add flag in supervisor config for devappserver to avoid checking for
sdk updates when it starts up so that the app either comes up or
errors out, not just hangs there waiting for user input that it will
never get.

Slight modification to docs to give an actual opinion on whether to
use virtualenv or not. As in yes, use a virtualenv for less python
packaging pain.