abrowser: disable Firefox Hello

helpers/DATA/firefox/settings.js

@@ -171,3 +171,6 @@ pref("browser.selfsupport.url", "");
 
 //Disable Link to FireFox Marketplace, currently loaded with non-free "apps"
 pref("browser.apps.URL", "");
+
+//Disable Firefox Hello
+pref("loop.enabled","false");