languages, [] for all */
facets: ["sources", "subjects", "authors"], /* display facets, in this order, [] for none */
sort_default: "relevance", /* "relevance", "title:1", "date:0", "date:1" */
query_width: 50, /* 5..50 */
perpage_default: 20, /* 10, 20, 30, 50 */
lang: "en", /* "en", "de", "da" */
languages, [] for all */
facets: ["sources", "subjects", "authors"], /* display facets, in this order, [] for none */
sort_default: "relevance", /* "relevance", "title:1", "date:0", "date:1" */
query_width: 50, /* 5..50 */
perpage_default: 20, /* 10, 20, 30, 50 */
lang: "en", /* "en", "de", "da" */