Make presence tab work

lib/forez/ui/routes/forez_route.dart

@@ -4,6 +4,7 @@ import 'package:comunic/ui/dialogs/alert_dialog.dart';
 import 'package:comunic/ui/routes/main_route/main_route.dart';
 import 'package:comunic/ui/routes/main_route/page_info.dart';
 import 'package:comunic/ui/screens/conversations_list_screen.dart';
+import 'package:comunic/ui/screens/group_sections/forez_presence_section.dart';
 import 'package:comunic/ui/widgets/safe_state.dart';
 import 'package:comunic/ui/widgets/status_widget.dart';
 import 'package:comunic/ui/widgets/tab_transition_widget.dart';
@@ -114,14 +115,14 @@ class _ForezRouteBodyState extends SafeState<ForezRouteBody> {
     _Tab(
       icon: Icons.calendar_today,
       title: tr("Presence"),
-      widget: Text("Presence"),
+      widget: () => ForezPresenceSection(groupID: forezGroup.id),
     ),
 
     // Conversations tab
     _Tab(
       icon: Icons.question_answer,
       title: tr("Conversations"),
-      widget: ConversationsListScreen(),
+      widget: () => ConversationsListScreen(),
       isUnread: (c) => StatusWidgetState.of(c).unreadConversations > 0,
     ),
 
@@ -129,7 +130,7 @@ class _ForezRouteBodyState extends SafeState<ForezRouteBody> {
     _Tab(
       icon: Icons.import_contacts,
       title: tr("Directory"),
-      widget: Text("Directory"),
+      widget: () => Text("Directory"),
     ),
   ];
 
@@ -147,13 +148,13 @@ class _ForezRouteBodyState extends SafeState<ForezRouteBody> {
       .toList();
 
   List<Widget> get _tabsPages =>
-      _list.map((e) => TabTransitionWidget(e.widget)).toList();
+      _list.map((e) => TabTransitionWidget(e.widget())).toList();
 }
 
 class _Tab {
   final IconData icon;
   final String title;
-  final Widget widget;
+  final Widget Function() widget;
   final bool Function(BuildContext) isUnread;
 
   const _Tab({