-Added 16 editable messages (these comprehend the GUI messages)
-Added Banned Worlds: In the chosen worlds cops won't be able to stay on duty.
To add/remove a banned world just run /jconfig, then the plugin will guide you using the tab completers.
If for some reason the tab completers won't work:
/jconfig bannedworlds <add / remove> <World name>
-Small changes to the code