show item policy on collection items as well as child policy. added config for selecting a admin role in the api incase the drupal role "administrator" doesnt exist JIRA https://jira.duraspace.org/browse/ISLANDORA-894
fix bug where policy tab is always shown first
only check xacml in the DS exists
only check xacml in the DS exists
revert role selection
Merge pull request #51 from nhart/6.x

6.x child policy changes. always show item policy