Upstream secure Thunderbird autoconfig wizard

Get these patches merged in Thunderbird upstream.

Upstream merge request: https://bugzilla.mozilla.org/show_bug.cgi?id=971347

Feature Branch: feature/6156-thunderbird-secure-auto-config

Attachments

• secure-account-creation.tar.gz

Subtasks

• #11450 (closed)
• #15788 (closed)
• #15790 (closed)
• #16147 (closed)

Related issues

• Related to #6150 (closed)
• Related to #7064 (closed)
• Related to #15387 (closed)
• Related to #16771
• Related to #16856
• Blocked by #11536 (closed)
• Blocked by #12151 (closed)
• Blocks #16209

Original created by @tails on 6156 (Redmine)