fix(songs): change new Vue to createApp

marietje/songs/templates/songs/manage.html

@@ -64,17 +64,18 @@
         </div>
     </div>
     <script>
-        let manage_vue = new Vue({
+        let manage_vue = createApp({
-            el: '#request-table',
             delimiters: ['${', '}$'],
-            data: {
+            data() {
-                songs: [],
+                return {
-                total_songs: 0,
+                    songs: [],
-                search_input: "",
+                    total_songs: 0,
-                typing_timer: null,
+                    search_input: "",
-                page_size: 10,
+                    typing_timer: null,
-                page_number: 1,
+                    page_size: 10,
-                user_data: null,
+                    page_number: 1,
+                    user_data: null,
+                }
             },
             watch: {
                 search_input: {