Card/caldav server setup for Sailfish device (in progress)

Finding a Sailfish compatible carddav & caldav server is not quite easy. Some are supposed to work and don't, some are not supported by Mer/Sailfish, some are a real pain to deploy, some are juste too huge projects and are not caldav/carddav oriented (e.g. Owncloud). After finding Sabre/dav, I've tested and deployed Baikal. My main constraint was to find something Sailfish compatible and easy to deploy.