Updated Access Control Page

modeled the users page layout on the access control page

Access Control Page Test

Access Control Test

Access Control Page and Test
Merge pull request #74 from jwadkins/access_control

Updated Access Control Page
Fix name to return the title, not the actual text
Merge pull request #84 from bcrochet/mgmtsys1

Fix name to return the title, not the actual text
add policy assignment mixin, unit test, updated checkbox tree to support flat list