am 186b94fe: 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 '186b94fe60a4cede177bace19b68c72c6f475190'

* commit '186b94fe60a4cede177bace19b68c72c6f475190':
  upload new dev site robots.txt to disallow old tutorial and