Enable Crowdin in context translations

[teolemon]

When the Crowdin In-Context tool is enabled, the archive with your project translation will include one additional language. It is required to store operational data about localization strings. Integrate this pseudo-language to your app along with other languages you translate to. You will have to switch your application to this language as one of the requirements to enable In-Context localization.
lol/common.po

<script type="text/javascript">
  var _jipt = [];
  _jipt.push(['project', 'openfoodfacts']);
</script>
<script type="text/javascript" src="//cdn.crowdin.com/jipt/jipt.js"></script>

It's important to add the Crowdin In-Context script before any other scripts, at the section of your document. Make sure this script is included on every page with localizable text. Optionally, you can include this JavaScript snippet only when the pseudo-language is active.

Part of

• 🌐 Improve the translator journey (tracker) #5528

[teolemon]

Pull request available #2421