[API docs] Modules should return an array of specification files

[xlecours]

For instance, the api module has a schema and a schema-{version}-dev file.
Being able to switch version would be nice.

[driusan]

I agree.. I think I said this on the initial PR but we decided to merge it to expediate it..

[xlecours]

I agree.. I think I said this on the initial PR but we decided to merge it to expediate it..

True :)

[xlecours]

This is still an issue