Activate log tracker for a user

This allows you to set a log file to track a specific user. Set the bare or full JID of the user you want to log, and a name of the files you wish the log to be written to. The files will be written in the root Tigase directory unless you give a directory like logs/filename. The log files will be named with a .0 extension and will be named .1, .2, .3 and so on as each file reaches 10MB by default. filename.0 will always be the most recent. Logging will start once the command has been issued, and cease once the server restarts.