SIGNUP-237 : Categories interfere with Locations

git-svn-id: https://source.sakaiproject.org/contrib/signup/trunk@85388 fdecad78-55fc-0310-b1b2-d7d25cf747c9
SIGNUP-238 : Update License to ECL 2.0, copyright Apereo Foundation

git-svn-id: https://source.sakaiproject.org/contrib/signup/trunk@85389 fdecad78-55fc-0310-b1b2-d7d25cf747c9