Improved layout, fixed transaction popup

lib/repositories/account/models/account.dart

@@ -9,11 +9,13 @@ class Account {
   List<Transaction> transactions;
   List<Budget> budgets;
   List<Category> categories;
+  Set<String> subAccounts;
 
   Account({
     this.transactions = const [],
     this.budgets = const [],
     this.categories = const [],
+    this.subAccounts = const {},
   });
 
   factory Account.fromJson(Map<String, dynamic> json) {
@@ -21,6 +23,7 @@ class Account {
       transactions: (jsonDecode(json['transactions']) as List<dynamic>).map((transaction) => Transaction.fromJson(transaction)).toList(),
       budgets: (jsonDecode(json['budgets']) as List<dynamic>).map((budget) => Budget.fromJson(budget)).toList(),
       categories: (jsonDecode(json['categories']) as List<dynamic>).map((category) => Category.fromJson(category)).toList(),
+      subAccounts: Set.from(jsonDecode(json['subAccounts'])),
     );
   }
 
@@ -28,5 +31,6 @@ class Account {
     'transactions': jsonEncode(transactions.map((transaction) => transaction.toJson()).toList()),
     'budgets': jsonEncode(budgets.map((budget) => budget.toJson()).toList()),
     'categories': jsonEncode(categories.map((category) => category.toJson()).toList()),
+    'subAccounts': jsonEncode(subAccounts.toList()),
   };
 }