LPS-42880 Shibboleth

Hey Brian,

I added an Auto Login class for Shibboleth and a JSP hook for configuring Shibboleth in the portal, just like Siteminder. There is a Shibboleth tab that will show up next to Siteminder in "control panel/portal settings/authentication".

I also kept the Logout Action that I had in the previous pull.

Thanks!