HTTPS support

Hi,
I’ve noticed that on a site visited using https the css for the plugin is still loaded using http – this causes the https page to be detected by newer browsers as insecure.

I’ve traced this to the function mtf_scripts – where you have WP_PLUGIN_URL in the enqueue for the css file. That constant always returns an http://… version of the site address, but if you change it to use plugins_url() it will work for both http and https sites.