Adds python config management.

Loads configs from .env-local before it runs. Can push or pull configs to/from heroku staging.
Can also pull configs from heroku production, but not push--just to be on the safe side.
Merge branch 'master' of github.com:total-impact/total-impact-webapp
remove ability to push .env files to heroku.
save point
Merge branch 'master' of github.com:total-impact/total-impact-webapp