User Mentions Improvements

Improvements to XenForo's user mention system.

• Mentionalable user groups.
  • customizable icon per group (small + large).
  • membership can be viewed on the front-end.
  • user group may be private, at which point only members can tag that group.
  • permission to tag taggable groups.
  • Admin privilege to view all taggable groups.
• User group mentions supports the following:
  • User profile posts/comments.
  • Posts/Threads.
  • Reports.
• Opt-in emails on mentioned/quoting:
  • global option to enable/disable.
  • configurable default for users on account creation.
  • permission to receive tagged emails.
• Editor integration. Copying & pasting a user group tag link is transformed into @usergroup
• User mentions can be disabled per forum per user group

Group Icons licensed under CC Attribution-Noncommercial-No Derivate 4.0 Sourced; http://www.iconarchive.com/show/sleek-xp-basic-icons-by-hopstarter/User-Group-icon.html