Merge pull request #1394 from Raruto/i18n-install

Set default langauge for "admin" user during app install.

Author: aheinze

install/index.php

@@ -79,7 +79,7 @@ function ensure_writable($path) {
         'active'   => true,
         'group'    => 'admin',
         'password' => $app->hash('admin'),
-        'i18n'     => 'en',
+        'i18n'     => $app->helper('i18n')->locale,
         '_created' => $created,
         '_modified'=> $created,
     ];