Merge "Update preview-community redirect to point at +AD." into nyc-dev am: 61d3faa52c am: 8f8fe7df92 am: 7f5f8b1df8 am: 7c2e40c715
am: a138d7b18f

Change-Id: I5f8211e551b9859b63e906963b0cda9bc1681256