[UP-4095 / UP-4103] Move the license section out of the XSL to a JSP.

https://issues.jasig.org/browse/UP-4095

partially addresses:

https://issues.jasig.org/browse/UP-4103   (still need to convert footer navigation to a portlet.  Related to https://issues.jasig.org/browse/UP-3969)
"uPortal.org" label no longer valid.  "uPortal website" or so?  www.jasig.org URL no longer valid.  apereo.org instead?  Probably worth spinning this content fix out into a separate JIRA and changeset.