Finished inbox, fixed reverse sort order, bloc refactorings

lib/extensions/dart_extensions.dart

@@ -22,3 +22,17 @@ extension DuplicateCheckable<T> on Iterable<T> {
     return toSet().length != length;
   }
 }
+
+extension DateHelpers on DateTime {
+  bool get isToday {
+    final now = DateTime.now();
+    return now.day == day && now.month == month && now.year == year;
+  }
+
+  bool get isYesterday {
+    final yesterday = DateTime.now().subtract(const Duration(days: 1));
+    return yesterday.day == day &&
+        yesterday.month == month &&
+        yesterday.year == year;
+  }
+}