* fix: #7604 shortened CTA text and added custom text for some notifs
Specifically, new-reply and new-chat have different CTA text as they
do not go to the forum home like other email templates send users to.
* fix: minor optimization as suggested by @barisusakli
* feat: ability to copy a groups privileges
ability to copy a group's privileges to all categories, or children of current category
* feat: switch to dropdown
added copy from category to groups
* fix: indents
* feat: re-designed digest
Updated design, logic no longer shows "no topics", just doesn't
show the list at all, teaser re-retrieved for digest so that it
always grabs a teaser even if there is no reply, changed default
email background to a light grey.
* fix: minor padding issues in digest
* fix: banned template
* fix: invitation.tpl
* fix: removed unused notif_chat and notif_post email templates
* fix: notification template
* fix: registration_accepted template
* fix: reset tpl
* fix: test tpl
* fix: email verify tpl
* fix: reset notify tpl
* fix: welcome tpl
* fix: additional minor font fixes
* fix: removed unused email header image assets
* fix: internationalised 'your daily digest' string
* fix: broken url in digest 🤦
* feat: added RTL support for emailer
/cc @PostMidnight
* feat: wip, category watch change
* feat: pass data to client
* feat: allow changing state
* fix: account page categories
* fix: show in unread if topic is followed or category is watched
* feat: add default watch state to acp
* feat: save user category watch state
* feat: update unread recent pages
* fix: remove dupe code
* fix: flip conditions
* fix: handle empty arrays
* fix: ignore/watch on others profile
* feat: upgrade script for category states
if there are any users ignoring categories set their state in new zset and delete cid:<cid>:ignorers
* fix: upgrade
* fix: tests
* fix: redis count
* fix: more tests