fix: SA: Fix many critical rules.

SA stands for Static Analysis.

src/Bundle/ChillMainBundle/Pagination/PageGenerator.php

@@ -1,50 +1,23 @@
 <?php
 
-/*
- * Chill is a software for social workers
- * Copyright (C) 2016 Champs-Libres Coopérative <info@champs-libres.coop>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
+declare(strict_types=1);
 
 namespace Chill\MainBundle\Pagination;
 
 /**
- * PageGenerator associated with a Paginator
- *
- * @author Julien Fastré <julien.fastre@champs-libres.coop>
- * @author Champs Libres <info@champs-libres.coop>
+ * PageGenerator associated with a Paginator.
  */
 class PageGenerator implements \Iterator
 {
-    /**
-     *
-     * @var Paginator
-     */
-    protected $paginator;
-    
-    /**
-     *
-     * @var int
-     */
-    protected $current = 1;
-    
-    public function __construct(Paginator $paginator) 
+    protected Paginator $paginator;
+
+    protected int $current = 1;
+
+    public function __construct(Paginator $paginator)
     {
         $this->paginator = $paginator;;
     }
-    
+
     public function current()
     {
         return $this->paginator->getPage($current);
@@ -67,7 +40,7 @@ class PageGenerator implements \Iterator
 
     public function valid()
     {
-        return $this->current > 0 
+        return $this->current > 0
               && $this->current <= $this->paginator->countPages();
     }
 }