add collate "C" to person name sorting

Author: dfurber

app/services/person_search.rb

@@ -68,7 +68,7 @@ def add_see_names
     return unless has_names_joined?
 
     builder.group("person_names.id")
-    builder.select(builder.scoped.select_values, 'person_names.first_name as matched_first_name, person_names.last_name as matched_last_name, concat_ws(\', \', lower(person_names.last_name), lower(person_names.first_name)) as sortable_matched_name')
+    builder.select(builder.scoped.select_values, 'person_names.first_name as matched_first_name, person_names.last_name as matched_last_name, concat_ws(\', \', lower(person_names.last_name), lower(person_names.first_name)) collate "C" as sortable_matched_name')
   end
 
   def add_sorts