SAK-25543 add missing spring bean and context jars

git-svn-id: https://source.sakaiproject.org/contrib/external-calendaring-service/trunk@85460 fdecad78-55fc-0310-b1b2-d7d25cf747c9
SAK-25543 downgrade the junit dep from 4.4 to 4.11 via inheritance; remove spring jars from <dependencyManagement> in favor of inheritance from master pom

git-svn-id: https://source.sakaiproject.org/contrib/external-calendaring-service/trunk@85461 fdecad78-55fc-0310-b1b2-d7d25cf747c9