Spawning from https://github.com/wikimedia-research/translation-recs-app/issues/42, we need to be able to keep up to date with jquery.uls. Some of the latest changes broke our usage of the extension.
- Investigate what functionality is no longer working (as of writing, the language filter wasn't working)
- Everything seems functional now
- Update to a stable version of ULS, while keeping a specific commit dependency to avoid this in the future
- Address how to periodically update ULS