Add static file mode to deliver thumbnails

lib/Alchemy/Phrasea/Http/StaticFile/StaticFileModeInterface.php

@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2014 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Http\StaticFile;
+
+use Alchemy\Phrasea\Http\ServerModeInterface;
+use Guzzle\Http\Url;
+
+interface StaticFileModeInterface extends ServerModeInterface
+{
+    /**
+     * @param $pathFile
+     *
+     * @return Url|null
+     */
+    public function getUrl($pathFile);
+}