English: Include the Font Awesome v4 CSS shim to support legacy icons (<a href="https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4#name-changes" target="_blank">more details</a>).
Dutch: Inclusief het Font Awesome v4 CSS shim voor ondersteuning van de verouderde pictogrammen (<a href="https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4#name-changes" target="_blank">meer details</a>).