sbt/sbt — pull request #1389 by jsuereth (2014-06-02 16:56:09+00:00)
Title: Remove nested site generation in favor of just creating Scaladoc/Sxr doc...

...s.

* Do not delete versioned docs from sbt/website project
* Just sync api/sxr directories
* Remove all build-related information for old sphinx docs.

Replaces #1385

Review by @eed3si9n