Modify app to use environment settings form Heroku

[dertseha]

Prepare the application to be run on Heroku.
(If there is something to be done)

[dertseha]

A few commits later, it is working; Only changes in the setup needed, no design changes needed.
Commit Log: http://manynames.sevensuns.at/eve-upro/2012/10/one-cloud-or-another.html