Signup abuse detection and blocking 1.16.12

• Fix detection of per-user email links being touched by the wrong user did not generate multi-account reports

• Fix user approval queue entry was always had the last activity added even if the user couldn't view it

• Require Standard Library by Xon v1.18.0+
• Fix uninstaller leaving behind some cached data
• Use php 7.2 typehinting in more locations
• Add "Multi-account registration mode - specific permissions" option to trigger the "Multi-account registration mode - specific" action when the detected multi-account has been explicitly allowed/denied per-user permissions

• Require Standard Library by Xon v1.17.0+
• Uses standardized route building to avoid conflicts with other 3rd party add-ons
• Add specific message in the thread view for why a user can't reply to a thread when the per-day limit has been reached

• Require php 7.2+
• Fix score-based option did not correctly show the hint/explain text in admincp
• Move "Non-allowed email action" option into "Connection Profiling - Passive" group
• Extend "Writing before registering" spam-checks to use add-on's scoring system, with defaults to moderate if the linked content is moderated or rejected (XF default)
• Add "[SignupAbuse] Limit user to replies per day" per-forum user-froup permission
  • Limit a member (not guest!) to X replies/new-threads per-day (ie the last 24 hours)
  • 0 or -1 mean no limit
  • Does not apply to users with "Manage any thread" permission

• Fix "accept/moderate/reject/addToGroup" as score values where not phrased

• Fix link checker could missing some URLs.
  • Raw IPv6 and international domains (aka punnycode encoded) where not reliably detected
• Fix XFMG media item description did not reliably trigger the link checker

• Improve compatibility with 3rd party add-ons which implement a search handler but not the entity handler for the backing type

• Require Xenforo 2.2+
• Add support for NixFifty's Tickets v2.5.0 approving/rejecting users from tickets

• Fix "[E_WARNING] Undefined array key" in language matching.
• Fix unknown langauges wouldn't always be explicitly marked as such.
• Add "Only score unknown language once" option (default true). Makes the "Country language - Unknown" setting more consistant to use.