Refacto : on ne verifie plus le role admin mais les permissions du role

em2rp/lib/views/widgets/calendar_widgets/event_details.dart

@@ -31,7 +31,7 @@ class EventDetails extends StatelessWidget {
       ..sort((a, b) => a.startDateTime.compareTo(b.startDateTime));
     final currentIndex = sortedEvents.indexWhere((e) => e.id == event.id);
     final localUserProvider = Provider.of<LocalUserProvider>(context);
-    final isAdmin = localUserProvider.role == 'ADMIN';
+    final isAdmin = localUserProvider.hasPermission('view_all_users');
 
     return Card(
       margin: const EdgeInsets.all(16),