More fixups.

Added basic self-updating feature. Requires manual restart, unfortunately.
Added Javadocs to a few methods.
Added ErrorManagement class -- basically displays a new JFrame with an error message. Very useful. Can also display error information, if a Throwable was supplied in the code.
Added the option to specific how long of a delay there should be between each site update (5-60 seconds)
Added the PAX icon to the status window.