Each tarball should be self contained

[arnaudgelas]

It should be possible to run sphinx on each tarball independently. For users who are not that familiar with sphinx, it would be great if they can fix the documentation of a single example (whenever there will be a web interface, it would be also useful I think to get such a thing).

[thewtex]

To serve the need identified here, we may want to look into a restructedText preview in the web interface.