WIP: File Browsing with Backbutton

lib/app.dart

@@ -22,25 +22,6 @@ class App extends StatefulWidget {
 
 class _AppState extends State<App> {
   int currentPage = 0;
-  late AppBar _appBar;
-
-  void setAppBar(BuildContext context, AppBar? appBar) {
-    setState(() {
-      _appBar = appBar ?? AppBar(
-        title: const Text("Marianum Fulda"),
-        actions: <Widget>[
-          IconButton(
-            padding: const EdgeInsets.only(right: 15),
-            icon: const Icon(Icons.settings),
-            onPressed: () {
-              Navigator.push(context, MaterialPageRoute(builder: (context) => const Settings()));
-            },
-          )
-        ],
-      );
-    });
-    setState(() {});
-  }
 
   @override
   void initState() {
@@ -55,8 +36,6 @@ class _AppState extends State<App> {
       Provider.of<ChatListProps>(context, listen: false).run();
     });
 
-    setAppBar(context, null);
-
     super.initState();
   }
 
@@ -75,7 +54,7 @@ class _AppState extends State<App> {
       screens: [
         const Timetable(),
         const ChatList(),
-        Files(setAppBar),
+        Files(const []),
         const Overhang(),
       ],
       items: [