-Pull XLIFF files from Zanata, and unescape them (so we retrieve inner elements in `source` tag, used by Angular).
-A hook converts `player` and `server`, `iso639` translation files to JSON (needed by Video.JS, and our application to have efficient runtime translation).
-Then, `iso639` files will be merged in `server` files (so we have only one JSON file to serve server translations).
+ * First, save translations on Weblate so it commits changes.
+ * Then, fetch these commits: `git fetch weblate && git merge weblate/develop`