Tags

Attach proper user to PortailVA poster importation

Dependencies update & datepicker fix

This tag is only to try to fix the docker build job

Changes for dev:
- Change docker-compose to a more modern version
- Rewrite nginx conf for dev
- Rewrite GitLab CI for dev
- Update Helm and Nginx conf (and add CORS headers to `/healthcheck` endpoint)
- Properly use env var for mail address and external links
- Lint project with Black and 
- Add some documentation and comments to set up project

Changes for user:
- Replace `<i>` tags for text by `<em>`,` <b>` by `<strong>`
- Add aria-hidden to <i> tag for css
- Add some documentation to README (See #16)
- Add basic SEO for public views
- Add legal notice
- Allow user to trigger manually some cron job (See #25)
- Correct non closing tags
- Fix bug when no poster are in the DB
- Fix date warning for PVA cron job
- Translate some text in french

add env mail admin

Résolution d'une faille de sécurité par injection.

Add helm chart
Using mailjet instead of mailgun