Cannot start the site. Java blocks me

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Start FireFox
2. Open Site
3. The App is blocked by Java-Security 

What is the expected output? What do you see instead?
Should see the App
I see "The app is blocked, because it references to a foreign domain"

What version of the product are you using? On what operating system?
Java8

Please provide any additional information below.

Original issue reported on code.google.com by knnovozh...@googlemail.com on 18 May 2015 at 1:38