Reduce noise in catalina.out log in staging and prod

[rogerdahl]

For Portal prod and staging, reduce verbosity in catalina.out by increasing the log level of this logger:

./WebRoot/WEB-INF/conf/log4j.properties

TODO: Ask Mark for logger location.

[servilla]

The following entry was added to both portal and portal-s in ./DataPortal/WebRoot/WEB-INF/conf/log4j.properpties:

log4j.logger.edu.lternet.pasta.portal.listener.SessionListener=WARN

This will now only emit a log message if the log level is set to WARN or more severe.