Update thunderbird to 68.2.0
Summary:
New:
- Message Display WebExtension API
- Message Search WebExtension API
Fixed:
- Better visual feedback for unread messages when using the dark theme
- Various issues when editing mailing lists
- Application windows not maintaining their size after restart
- Visual glitches: Missing context menu in filter, downloads, password manager and Config Editor search boxes, unwanted scrollbars and cut-off text in Account Manager, incorrect colors in Calendar agenda scrollbars, theme issues on Windows 7
- Some attachments couldn't be opened in messages originating from MS Outlook 2016
- Address book import form CSV
- Performance problem in message body search
- Ctrl+Enter to send a message would open an attachment if the attachment pane had focus
- Calendar: Issues with "Today Pane" start-up
- Calendar: Glitches with custom repeat and reminder number input
- Calendar: Problems with WCAP provider
Signed-off-by: Pierre-Yves <pyu@riseup.net>
Test Plan: Check my mails
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Subscribers: JoshStrobl
Differential Revision: https://dev.getsol.us/D7476