Consider using YAML files instead JSON for configurations

[cigolpl]

YAML seems to be easier and is used in successful frameworks like symfony or ansible.

Check if node.js has good integration with yaml and if it supports importing other yaml files: i.e.:

collections:
- include: collections/movies.yml
- include: collections/songs.yml

Then configuration files would be much easier too read and maybe we should use it.

[cigolpl]

YAML is definitely easier but there are other more prioritied stuff to do. We will come back to this later.