am 4a47f17a: Merge "add links to orientation flags in attribute docs to help determine the supported API level for each value and update the manifest reference page with new attributes" into jb-mr2-dev

* commit '4a47f17a9db8fd2b8b17ad10a629216cc3c6333c':
  add links to orientation flags in attribute docs to help determine the supported API level for each value and update the manifest reference page with new attributes