* Upgrade yarn packages to clear dependabot warnings
* Add prettier
* Run prettier
* Update docs
* Update babel config for moved plugins
* Add node_modules and similar to prettierignore, since on CI it's not run from same directory as gitignore
We updated the copy of the accessibility statement in 91b797c but there was some copy missed from the original document provided to us. This change adds the missing copy, and bumps the last reviewed date on the statement.