Tweaks

We don't use makina.recipe.postgres any more
Use the psycopg2 egg
We aren't building postgres at the moment so don't generate a wrapper
Refine config

More settings for filling the templates, with defaults and examples
Expand local_settings.py template
Fix use of djangorecipe

Specify 2.0.x branch (fork meant to track upstream branch)
Fix fumbles
Don't autostart, don't bother with postgres_wrapper for now