Inline comments :: 'js':[],'css':[],'qweb':[]

I propose to add inline comments for the following reason:

General understanding is promoted when reading the source files as probablyt the main entry point for a developer.
js,css,qweb are taken from other manifests I've seen. They are explained in the link. I think completedness of the manifest scaffold also helps reduce ambiguity about it.

Lastly, I introduced newlines for better readability and grouping.

I hope these changes, well (marginally) improve the usefulness of this great module.