There is a site that I visit often, which has some buttons programmed in java (for no reason). There is a missing permission attribute, and so each time I enter the site, I receive this message
In fact, I receive one of those for each button. I am using icedtea-web 1.6.2 on Arch Linux. I tried to add an exception by writing the URL of this page in the file $HOME/.java/deployment/security/exception.sites, but it did not work, I still receive the message.
How can I do to stop receiving those messages? I use Firefox 50.1.0.