Remove hierarchy from source and author facet

src/server/sparql/Manuscripts.js

@@ -22,13 +22,13 @@ const facetConfigs = {
     label: 'Author',
     //predicate: 'crm:P128_carries/^frbroo:R17_created/frbroo:R19_created_a_realisation_of/^frbroo:R16_initiated/mmm-schema:carried_out_by_as_author',
     predicate: 'mmm-schema:author',
-    type: 'hierarchical'
+    type: 'list'
   },
   source: {
     id: 'source',
     label: 'Source',
     predicate: 'dct:source',
-    type: 'hierarchical',
+    type: 'list',
   },
 };