Improved layout, fixed transaction popup

lib/pages/data/data_page.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:tunas/pages/data/widgets/account_settings.dart';
 import 'package:tunas/pages/data/widgets/categories_settings.dart';
 import 'package:tunas/pages/data/widgets/import_settings.dart';
 
@@ -7,27 +8,33 @@ class DataPage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Container(
-      padding: const EdgeInsets.symmetric(vertical: 9, horizontal: 10),
-      margin: const EdgeInsets.symmetric(vertical: 2, horizontal: 10),
-      child: const Column(
-        crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
-          Text(
-            'Settings',
-            style: TextStyle(
-              fontWeight: FontWeight.w900,
-              fontSize: 35,
+    return Center(
+      child: Container(
+        constraints: const BoxConstraints(
+          maxWidth: 1000 
+        ),
+        padding: const EdgeInsets.symmetric(vertical: 9, horizontal: 10),
+        margin: const EdgeInsets.symmetric(vertical: 2, horizontal: 10),
+        child: const Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text(
+              'Settings',
+              style: TextStyle(
+                fontWeight: FontWeight.w900,
+                fontSize: 35,
+              ),
             ),
-          ),
-          Row(
-            crossAxisAlignment: CrossAxisAlignment.start,
-            children: [
-              ImportSettings(),
-              CategoriesSettings()
-            ],
-          )
-        ]
+            Row(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                ImportSettings(),
+                CategoriesSettings(),
+                AccountSettings(),
+              ],
+            )
+          ]
+        )
       )
     );
   }