correction bootstrap sur config jenkins

cosmogramme/php/_init.php

@@ -27,7 +27,11 @@ if ($argc < 3) {
 		$cfgfile= "config.php";
 	}
 }
-else $cfgfile="./config.php";
+
+if (!isset($cfgfile) || !file_exists($cfgfile)) {
+  $cfgfile="./config.php";
+  $site = "/";
+}
 
 define("URL_BASE","http://" . $_SERVER["HTTP_HOST"] . $site . APPLI . "/");
 define("URL_IMG", URL_BASE ."images/");