update: small change no server behavior

app/lib/pages/default_page.dart

@@ -39,7 +39,12 @@ class _DefaultPageState extends State<DefaultPage> {
       throw Exception("Failed to fetch measurements: $error");
     });
 
-    relationFuture = fetchRelation();
+    // Attempt to fetch relation from server if app establishes connection
+    if (serverConnection){
+      relationFuture = fetchRelation();
+    } else { // Read last saved data
+      relationFuture =  loadSavedRelation();
+    }
 
     // Schedule fetchMarkerData to run periodically based on fetchInterval
     const Duration interval = Duration(minutes: fetchInterval); // NB fetchInterval value to be determined

app/lib/widgets/choropleth_map.dart

@@ -40,7 +40,6 @@ class _ChoroplethMapState extends State<ChoroplethMap> {
   late MapShapeSource mapShapeSource;
   late final MapZoomPanBehavior _zoomPanBehavior = MapZoomPanBehavior();
   List<SubDiv> subdivisions = <SubDiv>[];
-  List<SubDiv> groupDivisions = <SubDiv>[];
 
   @override
   void initState() {