provide note dates in the frontend API, fixes #4232

src/public/app/entities/fnote.js

@@ -970,6 +970,10 @@ class FNote {
     isOptions() {
         return this.noteId.startsWith("_options");
     }
+
+    async getMetadata() {
+        return await server.get(`notes/${this.noteId}/metadata`);
+    }
 }
 
 export default FNote;

src/public/app/widgets/ribbon_widgets/note_info_widget.js

@@ -128,8 +128,8 @@ export default class NoteInfoWidget extends NoteContextAwareWidget {
             .attr("title", metadata.dateCreated);
 
         this.$dateModified
-            .text(metadata.combinedDateModified.substr(0, 16))
-            .attr("title", metadata.combinedDateModified);
+            .text(metadata.dateModified.substr(0, 16))
+            .attr("title", metadata.dateModified);
 
         this.$type.text(note.type);