generate-docs: single file outputs

related to: https://github.com/neomjs/neo/commit/89d9e999c05b65ee53b085040332b60e8f56ccf6

The Docs App itself is using: output/all.json output/structure.json

The generator script is also saving each class into an own file.

This can be helpful for debugging reasons, but I did not use it directly inside the docs app, since the inheritance of classes can require a lot of ajax calls otherwise.

The issue encountered by @h1b9b is that the file namespacing only worked for framework classes and not for files of demo apps (and the docs app).

I got an idea on how to fix this.

On it!