replaced old script (to use with casperjs) with a new script (to use only with phantomjs)

It’s shorter, sturdier and it works (the old one didn’t, for unknown reasons).
renamed folder to phantomjs (since casperjs is no longer needed)
Added a fix on the nginx config (otherwise could colide with the default nginx config)

Also fixed the auto subscription, so it calls the correct script. I have added a new setting at the private_settings file with the full path to the script.