Fix the API documentation mess

[marcelstoer]

I want to drop the Wiki documentation and move the content to the repository so we can serve it with Read The Docs. See http://read-the-docs.readthedocs.org/en/latest/features.html for details. This would solve two major pain points:

• Documentation not in line with the code

  If the documentation is moved to the code repository we can verify with every commit/PR that the documentation is updated accordingly. Furthermore, the documentation is merged automatically with the code if it moves from branch X to Y. The human-readable docs are built automatically with every commit.

• L10n

  Read The Docs (and similar solutions) offer L10n to easily serve the documentation in multiple languages. This would replace the inconsistent Wiki pages for non-EN languages.

[devsaurus]

transfer the last outstanding module (1-wire)

It's RTD'ed now.

[marcelstoer]

All done.