TorBirdy disables the Icedove autoconfiguration by default

When trying to configure a new account with Torbirdy 0.1.3-1 and Icedove 31.2.0-1~deb I get the following message:

« TorBirdy has disabled Thunderbird’s auto-configuration wizard to protect your anonymity.

The recommended security settings for sajolida@pimienta.org have been set.

You can now configure the other account settings manually. »

We worked quite a lot on having a better autoconfiguration in terms of security so we should probably get rid of this message and interact with Torbirdy to know if our improvements are good enough for them.

Parent Task: #5663 (closed)

Original created by @sajolida on 8276 (Redmine)