EssentialsListComponent can take contributed add filters into account in facet search too

EssentialsListComponent#contributeAndFilters allows for adding your own HstFilters. They are used when a regular search is done. But they can also be used in a faceted search.

See this page for how that is done: http://www.onehippo.org/library/concepts/faceted-navigation/faceted-navigation-combined-with-free-text-search-and-hstqueries.html

I think this will enhance the usability of this component even further.