Load group information

lib/models/config.dart

@@ -27,6 +27,9 @@ class Config {
   // Entries for the welcome tour
   final TourEntriesBuilder toursEntriesBuilder;
 
+  // Custom initialization
+  final Future<void> Function() additionalLoading;
+
   // Custom main application route
   final Widget Function(BuildContext, GlobalKey) mainRouteBuilder;
 
@@ -41,6 +44,7 @@ class Config {
     this.appName = "Comunic",
     this.appQuickDescription,
     this.toursEntriesBuilder,
+    this.additionalLoading,
     this.mainRouteBuilder,
   })  : assert(apiServerName != null),
         assert(apiServerUri != null),