NOJIRA:  Read user attributes off the CAS Assertion
NOJIRA:  Give the globalSession AdditionalDescriptors bean an id so I can access it from the CAS security context
[UP-4196] Update CAS security context to optionally support converting CAS assertion attributes to uPortal user attributes.
[UP-4196] Convert to using a bean for the config value vs. re-reading security.properties repeatedly.
UP-4196 Change property name to match standards