new copyright & header + removed some shadowing
added new summary api
changed top-level orphans collection to use new manager summary api
Merge branch 'master' into jconnor-new-orphans-rest-api
changed orphans list command to utilize server-side summary
changed unit tests to reflect orphans cli changes
updated orphan documentation
Merge pull request #444 from pulp/jconnor-new-orphans-rest-api

Jconnor new orphans rest api