Improved reports, admin tools and staff ranks

Added a new report type, camera distance. A player is reported if their
camera is too far away from their player position.

Added a new admin level, "Game Master", this takes all commands of what
was "Moderator", which gets the tools of "Administrator" which is now
the top rank and has movement and teleport tools.

Added teleporting via camera distance reports.

Added camera mode to spectate info.

Added "/a" command for admin chat.