add GPL V3

add specific bootstrap for unit tests

core/lib/Thelia/Tests/bootstrap.php

@@ -0,0 +1,9 @@
+<?php
+
+/**
+ *
+ * @file
+ * Functions needed for Thelia bootstrap
+ */
+define('THELIA_ROOT', __DIR__ .'/../../../../');
+$loader = require __DIR__ . '/../../../autoload.php';