Merge pull request #2732 from waldenraines/bastion

Bastion: first pass at display of system subscription information.
Bastion: Fixing the use of rootURL after the removal of KT.config.
Merge pull request #2735 from ehelms/bastion-fix

Bastion: Fix for rootURL
Bastion: refactor nutupane to accept $resource and convert system subscriptions.

Nutupane should only require a $resource (or similar object) to work rather
than relying on an arbitrary Collection object.  This commit also introduces
a pattern for how our APIs should return lists of data.