add form to doc generation and custom form to admin template configuration

src/Bundle/ChillDocStoreBundle/EntityRepository/DocumentCategoryRepository.php

@@ -1,31 +0,0 @@
-<?php
-
-/**
- * Chill is a software for social workers
- *
- * For the full copyright and license information, please view
- * the LICENSE file that was distributed with this source code.
- */
-
-declare(strict_types=1);
-
-namespace Chill\DocStoreBundle\EntityRepository;
-
-use Doctrine\ORM\EntityRepository;
-
-/**
- * Get an available idInsideBUndle.
- */
-class DocumentCategoryRepository extends EntityRepository
-{
-    public function nextIdInsideBundle()
-    {
-        $array_res = $this->getEntityManager()
-            ->createQuery(
-                'SELECT MAX(c.idInsideBundle) + 1 FROM ChillDocStoreBundle:DocumentCategory c'
-            )
-            ->getSingleResult();
-
-        return reset($array_res);
-    }
-}