added libraries for relation map

src/public/javascripts/services/note_detail_relation_map.js

@@ -1,14 +1,17 @@
 import server from "./server.js";
 import noteDetailService from "./note_detail.js";
+import libraryLoader from "./library_loader.js";
 
 const $noteDetailRelationMap = $("#note-detail-relation-map");
 
-async function render() {
+async function show() {
     $noteDetailRelationMap.show();
+
+    await libraryLoader.requireLibrary(libraryLoader.RELATION_MAP);
 }
 
 export default {
-    show: render,
+    show,
     getContent: () => "",
     focus: () => null,
     onNoteChange: () => null