ChatUserPageButton is a slight modification of the ChatAvatarUserPageLink script that adds a "User Page" option to the UserStatsMenu popup window in Chat rather than wrapping the avatar image in a link. In that respect, it is similar to Ozank Cx's ChatBlockButton.
3-10-16 - Initial revision
12-10-16 - Removal of extraneous mw.config.get
18-11-16 - Revised to work with new chat icon system