Compatibility with shs module

This patch makes conditional_fields work with the shs module.

Full disclosure, I work with ramil g, and I think this is an elegant solution to providing compatibility to a widget that is effectively a Select widget, just more advanced.

Marking as RTBC because we are using it in production.

Thanks for the report, the work, and the review on it! And Thanks @joelpittet for the production testing and review. Will be committed in the next hours.

Thanks at all! Awesome work! +1

And sorry for the delay.

Automatically closed - issue fixed for 2 weeks with no activity.