Add a way to find all roles dirctly applied to a given resource.
Add rebuild of authorizations for only one given resource.
This will help rebuild authorizations of moved resources inside a hierarchy.
Merge branch 'master' into RebuildResouceAuthorizations
Rename $acl->rebuildResourceAuthorizations into $acl->rebuildAuthorizationsForResource.
Merge pull request #14 from myclabs/RebuildResouceAuthorizations

Rebuild resouce authorizations