functional datastructure. Needs to be able to write to storage as well

frontend/lib/pages/overview.dart

@@ -1,4 +1,5 @@
 import 'package:fast_network_navigation/modules/greeter.dart';
+import 'package:fast_network_navigation/structs/trip.dart';
 import 'package:flutter/material.dart';
 import 'package:sliding_up_panel/sliding_up_panel.dart';
 
@@ -8,6 +9,12 @@ import 'package:fast_network_navigation/modules/map.dart';
 
 
 class NavigationOverview extends StatefulWidget {
+  final Future<Trip> trip;
+
+  NavigationOverview({
+    required this.trip
+  });
+
   @override
   State<NavigationOverview> createState() => _NavigationOverviewState();
 }
@@ -23,7 +30,7 @@ class _NavigationOverviewState extends State<NavigationOverview> {
         renderPanelSheet: false,
         panel: _floatingPanel(theme),
         collapsed: _floatingCollapsed(theme),
-        body: MapWidget()
+        body: MapWidget(trip: widget.trip)
     );
   }
 
@@ -58,7 +65,7 @@ class _NavigationOverviewState extends State<NavigationOverview> {
           child: Column(
             children: <Widget>[
               Greeter(theme, full: true),
-              loadLandmarksOverview(),
+              LandmarksOverview(trip: widget.trip),
             ],
           ),
         ),

frontend/lib/pages/profile.dart

@@ -51,13 +51,7 @@ class ImportanceSliders extends StatefulWidget {
 
 class _ImportanceSlidersState extends State<ImportanceSliders> {
 
-  final UserPreferences _prefs = UserPreferences();
-
-  @override
-  void initState() {
-    _prefs.load();
-    super.initState();
-  }
+  UserPreferences _prefs = UserPreferences();
 
   List<Card> _createSliders() {
     List<Card> sliders = [];
@@ -89,6 +83,7 @@ class _ImportanceSlidersState extends State<ImportanceSliders> {
 
   @override
   Widget build(BuildContext context) {
+
     return Column(children: _createSliders());
   }
 }