am 74962e56: upload new dev site robots.txt to disallow old tutorial and samples directories (while old pages are still orphaned) and upload new sitemap including new resources pages.

Merge commit '74962e56c5d625fe94a6bfc9cf1acd361382f0b6' into eclair-plus-aosp

* commit '74962e56c5d625fe94a6bfc9cf1acd361382f0b6':
  upload new dev site robots.txt to disallow old tutorial and