Proof of concept mechanism for hiding questions related to ineligible benefits

From #51:
> Screening seem to be working as intended for the MVP release. Some post-mvp improvements for hiding questions based on benefits 'in play' is recommended. Some questions that are benefit-specific will still appear after a benefit has already been determined ineligible. For example "Have you continuously owned and occupied your property as your primary residence since at least July 1, 2014?" still appears when LOOP has been marked as already enrolled. This question does not pertain to any of the other benefits

El issue no menciona archivos, pruebas ni puntos de entrada. Empieza por localizar la lógica de screening y cómo se representan las prestaciones que ya se han determinado como no elegibles; se considera terminado cuando las preguntas específicas de una prestación, como la LOOP property question, ya no aparecen después de que LOOP se haya determinado como no elegible, mientras que las preguntas no relacionadas siguen apareciendo.

Escrito por el modelo de indexación a partir del texto del issue.