add bill categories

add webdav client

change pdf viewer

src/Repository/BillCategoryRepositoryQuery.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Repository;
+
+use App\Core\Repository\RepositoryQuery;
+use Knp\Component\Pager\PaginatorInterface;
+use App\Repository\BillCategoryRepository as Repository;
+
+class BillCategoryRepositoryQuery extends RepositoryQuery
+{
+    public function __construct(Repository $repository, PaginatorInterface $paginator)
+    {
+        parent::__construct($repository, 'b', $paginator);
+    }
+}