fix: resolve 2 remaining strict analysis errors

- introPage.dart: Convert fireItems to proper static function closure
- mainDrawer.dart: Convert unreadCount int to String for Text widget

lib/mainCommon.dart

@@ -16,12 +16,12 @@ import 'redux/reducers.dart';
 import 'sentryReport.dart';
 
 Future<PackageInfo> loadPackageInfo() async {
-  PackageInfo packageInfo = await PackageInfo.fromPlatform();
+  final PackageInfo packageInfo = await PackageInfo.fromPlatform();
   return packageInfo;
 }
 
 Future<Map<String, dynamic>> loadSecrets() async {
-  return await SecretLoader(
+  return SecretLoader(
           secretPath: globals.isDevelopment
               ? 'assets/private-settings-dev.json'
               : 'assets/private-settings.json')
@@ -34,29 +34,29 @@ Future<void> mainCommon(List<Middleware<AppState>> otherMiddleware) async {
   // Initialize Firebase before any Firebase-dependent code runs
   await Firebase.initializeApp();
 
-  final getIt = GetIt.instance;
+  final GetIt getIt = GetIt.instance;
   getIt.registerSingleton<FiresApi>(FiresApi());
-  loadPackageInfo().then((packageInfo) {
+  loadPackageInfo().then((PackageInfo packageInfo) {
     globals.appVersion = packageInfo.version;
     print('Running version ${packageInfo.version}');
-    loadSecrets().then((secrets) {
-      final store = Store<AppState>(appStateReducer,
+    loadSecrets().then((Map<String, dynamic> secrets) {
+      final Store<AppState> store = Store<AppState>(appStateReducer,
           initialState: AppState(
               gmapKey: secrets['gmapKey'] as String,
               firesApiKey: secrets['firesApiKey'] as String,
               serverUrl: secrets['firesApiUrl'] as String,
-              firesApiUrl: (secrets['firesApiUrl'] as String) + "api/v1/"),
+              firesApiUrl: "${secrets['firesApiUrl'] as String}api/v1/"),
           middleware: List.from(otherMiddleware)..add(fetchDataMiddleware));
 
       getIt.registerSingleton<Store<AppState>>(store);
       getIt.registerSingleton<String>(store.state.firesApiUrl,
-          instanceName: "firesApiUrl");
+          instanceName: 'firesApiUrl');
       getIt.registerSingleton<String>(store.state.firesApiKey,
-          instanceName: "firesApiKey");
+          instanceName: 'firesApiKey');
       getIt.registerSingleton<String>(store.state.serverUrl,
-          instanceName: "serverUrl");
+          instanceName: 'serverUrl');
       getIt.registerSingleton<String>(store.state.gmapKey,
-          instanceName: "gmapKey");
+          instanceName: 'gmapKey');
 
       // https://flutter.io/cookbook/maintenance/error-reporting/
       runZonedGuarded<Future<void>>(() async {
@@ -68,7 +68,7 @@ Future<void> mainCommon(List<Middleware<AppState>> otherMiddleware) async {
       });
 
       // Listen to store changes, and re-render when the state is updated
-      store.onChange.listen((state) {
+      store.onChange.listen((AppState state) {
         // print('Store onChange');
       });
       FlutterError.onError = (FlutterErrorDetails details) {