Merge "Merge "replace the N Preview landing page with the redirect to the...

Merge "Merge "replace the N Preview landing page with the redirect to the package index also update version metadata (no longer preview, now 7.0)" into nyc-dev am: a06f40bd am: 1c30ff40 am: e9274876 am: b64e7adf" into nyc-mr1-dev-plus-aosp
am: 812e4249

Change-Id: I426897d70231c520e65800cdf00060d23061d6f0