User Mentions Improvements By Xon 2.4.0

User Mentions Improvements by Xon 2.4.0 is an advanced user reference system for XenForo 2.

Features:
Sort user groups.
Customizable icon for each group (small + large).
A group may be closed to mention, and only members of this group may mention them.
Administrator rights to view all tagged groups.
User messages / user comments.
Sending a mention to the user that was mentioned.
Editor integration. Copying and pasting the user group tag link is converted to @usergroup.
User mentions can be disabled for each forum and for each user group.
And much more.

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