autocompletion/commit

IMPROVED: removed unused code, re-use generic skos stuff from skos package

diff --git a/api/autocomplete_api.pl b/api/autocomplete_api.pl
index 903f0f5..50d0163 100644
--- a/api/autocomplete_api.pl
+++ b/api/autocomplete_api.pl
@@ -71,10 +71,10 @@ ac_expand_hit(hit(R,P,_Label,[]),
 		  }) :-
 	skos_all_labels(R,Labels),
 	skos_notation_ish(R,MainLabel),
-	skos_related_concepts(R, Related),
-	findall(B, rdf_has(R, skos:broader,  B), Broader),
-	findall(N, rdf_has(R, skos:narrower, N), Narrower),
-	findall(Im,rdf_has(R, foaf:depiction, Im), Images),
+	findall(Rel, skos_related_concept(R, Rel), Related),
+	findall(Bro, skos_parent_child(Bro, R), Broader),
+	findall(Nar, skos_parent_child(R, Nar), Narrower),
+	findall(Img, rdf_has(R, foaf:depiction, Img), Images),
 
 	json_all_literal_propvalues(R, skos:notation, Notations),
 	json_all_literal_propvalues(R, skos:scopeNote, ScopeNotes),