Adds proposed table definition for new groups and permissioning feature.  Will enable fine grained customization of user groups and permissions.
Adds proposed table definition for new groups and permissioning feature.  Will enable fine grained customization of user groups and permissions.

git-svn-id: 245d8f85226f8eeeaacc1269b037bb4851d63c96@846 54a900ba-8191-11dd-a5c9-f1483cedc3eb

nswinea/cliniccases,nswinea/cliniccases,nswinea/cliniccases