[Xon] Report Improvements 2.20.3

This add-on introduces potentially breaking changes to moderation permissions. Please review usergroup permissions carefully to ensure moderators do not lose access to the report center!

A Collection of improvements to XF's reporting system. Fully phrased.

On install, all existing warnings are copied into a new warning change tracking log and associated with reports. This process occurs as a background task, and is non-disruptive.

Note; when reports are sent to a forum, the warning<->report links can not be created!

Feature list:

• Improve performance of Report Center by reducing stock XenForo N+1 query behaviour
• Permission based access to the report center:
  • Default permissions set for groups (global/content) for groups with warn or edit basic profile permissions.
  • New Permissions:
    • View Report center
    • Comment on open report
    • Comment on closed report
    • Update a report's status
    • Assign report
    • View Reporter Username
    • React to report comments
    • View User Report
    • View Profile Post Report
    • View Conversation Report
    • Edit own report comment
    • Time limit on editing/deleting own report comments (minutes)
    • Edit any report comment
    • View attachments to report comments
    • Upload attachments to report comments
    • Upload videos to report comments
    • Attachment Size (kb)
    • Maximum Attachment Count
• Sends an Alert to moderators who have commented/reported on a report.
  • Only sends an alert if the previous alert has not been viewed
  • Report Alerts link to the actual comments for longer reports
  • Report Alerts include the title of the report
• Alert moderators if a report is assigned to them
• Links Warnings to reports.
  • Visible from the warning itself, and when issuing warnings against content.
• Link reply bans to reports
  • Log reply bans into report system
  • Optional Issue a reply-ban on issuing a warning (default disabled)
  • Allow reply-banning through a closed threads for moderators
• Link Reports to Warnings.
  • Logs changes to Warnings (add/edit/delete), and associates them with a report.
• Automatically create a report for a warning.
• When issuing a Warning, option to resolve any linked report.
• Optional ability to log warnings into reports when they expire. This does not disrupt who the report was assigned to, and does not re-open the report.
• Report Comment Likes.
• Resolved Report Alerts are logged into Report Comments (as an explicit field).
• Search report comments
• Optional ability to search report comments by associated warning points, and warned user. (Requires Enhanced Search Improvements add-on)
• Reverse order of report comments (default disabled)
• Optional auto-reject/resolve sufficiently old reports (default disabled)
• Show content date when viewing a report
• Show forum for post reports in report list
• Permission-based ability to join a reported conversation