some work to fix old client sim script
Merge branch 'development' of https://github.com/adlnet/Sandbox into development
Merge branch 'development' of https://github.com/adlnet/Sandbox into development
much cleanup of usermanager. Also much better support for anonymous users. Try to remove identity information from avatars. Previously, a lot of the info about whether or not a user was in the scene depended on the state of the avatar. This all needs to move to the clients property of the scene. Also, allow anonymous users to chat and PM. Make communication use the clientID instead of the Username.