Updated docs for currently supported providers and Karaf features

- Removed BlueLock Getting Started Guide as per jclouds [PR 543](https://github.com/jclouds/jclouds/pull/543)
- Updated product names in `guides/index.md`
- Updated/reorganized the order of features in `guides/karaf.md`
- Updated ISO codes and labs providers in `reference/providers.md`