Create fixtures for kfet application:
- Add a bunch of non-cof profiles whose "last_name" is "Romain";
- Add k-fet articles using the real ones as a template;
- Add LIQ account;
- Add groups K-fet Chef and K-fet Girl;
- Add "caisse".
We also added some template for future tests (well, actually it's the script
used to generate the fixtures…).