Design and better descriptions for feedback dialog

lib/view/settings/settings.dart

@@ -238,8 +238,8 @@ class _SettingsState extends State<Settings> {
 
             ListTile(
               leading: const CenteredLeading(Icon(Icons.code)),
-              title: const Text("Quellcode der App"),
-              subtitle: const Text("Open Source GNU GPL v3"),
+              title: const Text("Quellcode MarianumMobile/Client"),
+              subtitle: const Text("open source GNU GPL v3"),
               onTap: () => ConfirmDialog.openBrowser(context, "https://mhsl.eu/gitea/MarianumMobile/Client"),
             ),