If config.php does not exist then redirect to the install.php.

login.php

@@ -26,6 +26,12 @@
 include "root.php";
 require_once "includes/require.php";
 
+//if config.php does not exist then redirect to the install.php.
+	if (!file_exists($_SERVER['DOCUMENT_ROOT'].PROJECT_PATH."/includes/config.php")){
+		header("Location: ".PROJECT_PATH."/resources/install.php");
+		exit;
+	}
+
 //add multi-lingual support
 	echo "<!--\n";
 	require_once "core/login/app_languages.php";