demo

• with external configuration files checkout <project>/ci/etc/demo/demo.yml and <project>/ci/etc/demo/conf.d/*.yml.
• normalize app structure

[ -d ci/certs ] || mkdir -p ci/certs
openssl req -newkey rsa:2048 -nodes -keyout ci/certs/server.key -x509 -days 3650 -out ci/certs/server.crt