Added method overrides and summaries:
Added method overrides and summaries:

- GetUsersWithRoles(Enterprise enterprise)
- GetUser(Enterprise enterprise, int id)
- GetDataCentersLimits(Enterprise enterprise)
- GetDataCentersLimits(Enterprise enterprise, int id)
- GetVirtualMachines(VirtualAppliance virtualAppliance)

dfensgmbh/biz.dfch.CS.Abiquo.Client