Adding pagination support.
Add in Hibernate components for order and sort_by.
Loosen restrictions on order and sort_by.
Allow paging for DetachedCriteria queries.
Switch from using offset and limit to page and per_page.
Add post-interceptor to construct Link header.
Catch NPEs that could occur in LinkHeaderPostInterceptor.
Add some additional testing.
Remove unused import.
Add tests for AbstractHibernateCurator's pagination facilities.
Merge pull request #271 from candlepin/awood/pagination

Awood/pagination