[mod] remove the need to do a python cfp/manage.py
[mod] unfold massive imports
[mod] remove useless imports
[fix] badly named exception class
[mod] pep8 pass
[mod] remove useless file
[mod] use sqlite by default, easier for devs
[mod] clean debug settings
[mod] arbitraty augment the date in the settings to have something usable for contributors
[mod] update .gitignore
[enh] allow to add a settings_local.py
[enh] add a README.md