* remove FEATURE_NEW_VERSIONS from feature-flags.json
* remove process.env.FEATURE_NEW_VERSIONS from include files
* remove process.env.FEATURE_NEW_VERSIONS from lib files
* remove process.env.FEATURE_NEW_VERSIONS from middleware files
* remove process.env.FEATURE_NEW_VERSIONS from script files
* remove process.env.FEATURE_NEW_VERSIONS from test files
* update test fixtures to use new versions as canonical fixtures
The files in this directory are "includes", snippets of HTML that can be
reused in multiple layouts or pages. In Ruby on Rails parlance, these are
called "partials".
Using Includes
This example injects the contents of includes/header.html into the
page: