Signup abuse detection and blocking 1.16.12

• Add php7 typehinting (partial)
• Add short caching to DNS querys lookups for ASN resolving
• Support using Cymru country lookup as a last ditch geoip lookup
• Add new GeoIP lookups, most require paid accounts or limited free services
  • Add support for ipstack.com for geoip/asn service. This service requires an account for the geoip, and a paid account for the asn lookup service
  • Add support for ip-api.com for geoip/asn service. This service requires an account for the geoip, and a paid account for the asn lookup service
  • Add support for ipregistry.co for geoip/asn service. This service requires an account, with a free tier and then requiring payment
• Update GetIpIntel "private ip" error text to indiciate this can also be due to BGP hijacking
• In user registration log, render IP's as links to ip-lookup tool
• In user registration log, render ASN's as links to peeringdb.com to describe the ISP/network provider
• Support setting a per-content type default for spam link check rendering

• Fix php 8.1 compatibility, with csv export

• Fix GetIpIntel integration from being soft-disabled

• On user delete, ensure expensive large data recomputing only occurs once even if multiple users are deleted at once.
• Fix running expensive data delete is full-delete for GDPR is not enabled
• Add "Approval queue - skip click-to-shrink" option which allows individual content types to skip the XF2.2+ default click-to-shrink behaviour

• Add "Allow rejected user logout" option

• Fix the moderate based off threshold was incorrectly using reject threshold instead of moderation threshold (affects v1.9.1-1.9.3)

• As documented, make ASN matching actually stop on first match
• As documented, make Allowed email domain matching actually stop on first match

• Fix Link Checker not being run on post contents

• Fix allowing banned users to logout was failing
• Inject a "log out" link onto banned error page if "Allow banned logout" is true
• Force global namespace for functions which are known to be optimizable to bytecode in php

• Use <xf:fa icon="..." /> instead of hard-coded icons
• Ensure multi-account tracking isn't triggered from an admincp login
• Correctly set tracking cookie on logout & keep-alive ping (previous code was ineffective as it had the wrong cookie path)
• Capture client timezone & language into user registration log
• Add filtering for allowed email domains in admincp