Petit refactoring

- Docstring
- PEP8
- Des todos pour en discuter
Petit refactoring

- PEP8
- Docstring
- TODO a discuter
- Corrections "evidentes"
Merge branch 'zep_12_double_stack' of https://github.com/artragis/zds-site into remake_model_for_zep12
Merge pull request #7 from pierre-24/remake_model_for_zep12

merge refacto