Fixed issue with progress bar showing 0% when job is paused.

Fixed safety checks that deal with new status "Paused"

Added exception handling to setup panel and StatusThread to deal with server connection-related issues.

Rewrote compgrid (input window) to use same method as computer panel.

Moved default settings for compgrid & comppanel columns, default host, port, and StatusThread refresh interval to Config. Will put these in a prefs window soon.