TypeGroups Localization and refactor

controllers/aircrafttypegroup/preview.htm

@@ -0,0 +1,23 @@
+<?php Block::put('breadcrumb') ?>
+<ul>
+  <li><a href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroup') ?>">Aircraft Type Groups</a></li>
+  <li><?= e($this->pageTitle) ?></li>
+</ul>
+<?php Block::endPut() ?>
+
+<?php if (!$this->fatalError): ?>
+
+<div class="form-preview"><?= $this->formRenderPreview() ?></div>
+
+<?php else: ?>
+<p class="flash-message static error"><?= e($this->fatalError) ?></p>
+<?php endif ?>
+
+<p>
+  <a
+    href="<?= Backend::url('germanairlinesva/fleet/aircrafttypegroup') ?>"
+    class="btn btn-default oc-icon-chevron-left"
+  >
+    <?= e(trans('backend::lang.form.return_to_list')) ?>
+  </a>
+</p>