Merge "update metadata for the studio landing page cards (for 2.2 content)...

Merge "update metadata for the studio landing page cards (for 2.2 content) edit landing page banner ("a dozen" --> "20") am: 0e98b64a am: d7c3be89" into nyc-mr1-dev-plus-aosp
am: d87b123e

Change-Id: I94fea89d95603b86ca90444d01bd91325240232d