Switched all urls to point directly to the new EROS machine.  Things see...

...m to work except the study area layer.

In addition:
* rm'ed the reference to the arc server name in the ui.js file.  It is now completely configured in the web.xml file.
* Added a new proxy that adds a 'Content-Disposition:  attachment' for the file download.  This prevents the browser from trying to replace the current page w/ the download.
* rm'ed unused proxy and its configuration.