Custom template

You can set a custom template as follows:

Create the template in /app/data/custom_template/custom.php. The name custom.php is hardcoded in the package.
Change the template name in /app/data/conf/conf.php to be custom.
You can save additional js/css/img in /app/data/custom_template/ and access them from the php script as js/custom/.., css/custom/..., img/custom/....