Fix rowmapper generator, check for fields, map users #443 (#583)

* Fix rowmapper generator, check for fields, map users #443

* Formatting

* Remove value store at the end of the import

* Update the notes for the importer about users

* Uncomment importers disabled during testing

resources/views/system/acars/config.blade.php

@@ -1,4 +1,6 @@
-<?xml version = "1.0" encoding = "utf-8"?>
+@php
+echo '<?xml version = "1.0" encoding = "utf-8"?>';
+@endphp
 <AcarsConfiguration xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.phpvms.net/acars/config">
   <AirlineUrl>{{ config('app.url') }}</AirlineUrl>
   <ApiKey>{{ $user->api_key }}</ApiKey>