Fix xqwatcher sudoers

@e0d and @itsbenweeks I created jails for course numbers and those have dots.  It turns out sudoers.d ignores any file with a dot in it and doesn't give a warning of any kind so it wasn't an apparmor problem.  I also removed the sudoers files for the jail users since they don't need a password to execute any command as themselves.  I am also fairly certain we don't want xqwatcher or the codejail users to be able to execute kill and pkill as root.