kijiproject.github.com: DOCS-124 Moved all but 2+development version of tutorials and user guides to top-level folders so they are static and not clogging up Jekyll. Other actual text changes include: -  Reorganized the user guide and tutorial home pages to emphasize the most recent release -  Brought _posts/tutorials/music-recommendation/2012-01-01-followups.md into the latest devel branch; this file seems to have been lost back in 1.0.0-rc4. Content looks like its still appropriate.

commit: https://github.com/kijiproject/kijiproject.github.com/commit/8f0be07d55879ec231c8045509e503434543097d