complete story 2.3 with qa test

lang/en/emails.php

@@ -0,0 +1,14 @@
+<?php
+
+return [
+    // Account Type Changed
+    'account_type_changed_subject' => 'Your Account Type Has Been Changed',
+    'account_type_changed_title' => 'Your Account Type Has Been Changed',
+    'account_type_changed_greeting' => 'Hello :name,',
+    'account_type_changed_body' => 'We would like to inform you that your account type has been changed to :type.',
+    'account_type_changed_note' => 'All your previous consultations and timelines are still preserved and accessible.',
+
+    // Common
+    'login_now' => 'Login Now',
+    'regards' => 'Regards',
+];