This is a much more sensible name since it contains configuration
applicable to both GestioCOF and GestioBDS.
The next logical step would be to rename the `gestioncof/` folder to
`cof/`.
We reproduce what has been done here:
https://github.com/dissemin/dissemin
The following files can be found under `cof/settings/`
- `common.py`: the settings that are shared by all the environments we
have + the secrets (see below).
- `dev.py`: the settings used by the vagrant VM for local development.
- `prod.py`: the production settings (for both www.cof.ens.fr and
dev.cof.ens.fr)
There is also a notion of "secrets". Some settings like the `SECRET_KEY`
or the database's credentials are loaded from an untracked files called
`secret.py` in the same directory. This secrets are loaded by the common
settings file.
