Merge branch '3.8'

Conflicts:
	lib/Alchemy/Phrasea/Core/Version.php
	lib/classes/task/period/archive.php
	templates/web/admin/collection/collection.html.twig
	templates/web/admin/databox/databox.html.twig
	templates/web/login/layout/base-layout.html.twig

lib/classes/patch/383alpha2a.php

@@ -0,0 +1,68 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2012 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Alchemy\Phrasea\Application;
+
+class patch_383alpha2a implements patchInterface
+{
+    /** @var string */
+    private $release = '3.8.3-alpha.2';
+
+    /** @var array */
+    private $concern = array(base::APPLICATION_BOX);
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get_release()
+    {
+        return $this->release;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function require_all_upgrades()
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function concern()
+    {
+        return $this->concern;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply(base $appbox, Application $app)
+    {
+        // Clean validation sessions where initiator_id does not exist anymore
+        $sql = 'SELECT DISTINCT(v.id) AS validation_session_id FROM `ValidationSessions` v LEFT JOIN usr u ON (v.initiator_id = u.usr_id) WHERE u.usr_id IS NULL';
+        $stmt = $appbox->get_connection()->prepare($sql);
+        $stmt->execute();
+        $rows = $stmt->fetchAll(\PDO::FETCH_ASSOC);
+        $stmt->closeCursor();
+
+        foreach ($rows as $row) {
+            if (null !== $vsession = $app['EM']->find('Entities\ValidationSession', $row['validation_session_id'])) {
+                $app['EM']->remove($vsession);
+            }
+        }
+
+        $app['EM']->flush();
+
+        return true;
+    }
+}