complete story 1.3 with qa test & added future recommendations to the dev

lang/en/auth.php

@@ -0,0 +1,8 @@
+<?php
+
+return [
+    'failed' => 'These credentials do not match our records.',
+    'password' => 'The provided password is incorrect.',
+    'throttle' => 'Too many login attempts. Please try again in :seconds seconds.',
+    'account_deactivated' => 'Your account has been deactivated. Please contact the administrator.',
+];