Upgrade to Thunderbird 52.8.0
Originally created by @intrigeri on #15607 (Redmine)
Feature Branch: bugfix/15607-thunderbird-52.8.0
Related issues
- Blocks #15395 (closed)
- Blocks tails/accounting#15139
- Blocks #15602 (closed)
Originally created by @intrigeri on #15607 (Redmine)
Feature Branch: bugfix/15607-thunderbird-52.8.0