DAC-68 add LICENSE, NOTICE and source file headers, ECL 2.0, copyright Columbia

git-svn-id: https://source.sakaiproject.org/contrib/delegatedaccess/trunk@85605 fdecad78-55fc-0310-b1b2-d7d25cf747c9
DAC-69 pom cleanup

git-svn-id: https://source.sakaiproject.org/contrib/delegatedaccess/trunk@85606 fdecad78-55fc-0310-b1b2-d7d25cf747c9