Strangers get to create new topics (if the appropriate tickbox is ticked)
but low-TL existing users don't. That might seem a bit backwards, but
the tickbox says 'strangers', not 'everyone'.
- All unsubscribes go to the exact same page
- You may unsubscribe from watching a category on that page
- You no longer need to be logged in to unsubscribe from a topic
- Simplified footer on emails
* Rearrange frontend to account for mailing list mode
* Allow update of user preference for mailing list frequency
* Add mailing list frequency estimate
* Simplify frequency estimate; disable activity summary for mailing list mode
* Remove combined updates
* Add specs for enqueue mailing list mode job
* Write mailing list method for mailer
* Fix linting error
* Account for stale topics
* Add translations for default mailing list setting
* One query for mailing list topics
* Fix failing spec
* WIP
* Flesh out html template
* First pass at text-based mailing list summary
* Add user avatar
* Properly format posts for mailing list
* Move make_all_links_absolute into Email::Styles
* Apply first_seen_at to user
* Send mailing list email summary hourly based on first_seen_at
* Branch and test cleanup
* Use existing mailing list mode estimate
* Fix failing specs
* FIX: Don't diplay character reference in HTML diffs
Before this change, HTML escaping was done before splitting text into
tokens, so token splitter saw literals like "'", and split them as
it was normal text into parts into ["&", "#", "39", ";"]. This caused
diff to display character references, as those tokens used separate
HTML tags to display their insertion/deletion status.
* Avoid making one element arrays while generating diffs
- Show bounce score on user admin page
- Added reset bounce score button on user admin page
- Only whitelisted email types are sent to emails with high bounce score
- FIX: properly detect bounces even when there is no TO: header in the email
- Don't desactivate a user when reaching the bounce threshold
