Pretty much completely rewritten theme with custom HTML translator and a
few parts of the old theme extracted to their own extensions.
Banner images thought not to be that huge after all, and not worth the
hassle of them living in a different repository.
co-authored with @stefanorigano
* Odoo installation from packages or source
* Deployment instructions for production environments
Add missing support for disabling xmlrpc(/http), useful for WSGI
deployments which require running cron-only Odoo instances.