Tor browser / HTTPS Everywhere should not connect to check.torproject.org on startup
Originally created by @intrigeri on #6261 (Redmine)
In Tails 0.20, on every Iceweasel startup (including the 2nd one etc. during a given GNOME session), it connects to check.torproject.org (as seen in Vidalia network map).
We already have versioncheck_enabled=false. Setting versioncheck_url=“about:blank” and test_url=“about:blank” does not change the behaviour.
Reproduced with tor-browser-gnu-linux-x86_64-2.3.25-12-dev-en-US.tar.gz.