Add new methods for get data with Vos

- add method getDataWithVos (new structure with Vos before Resources)
- add method getRequiredAttributes for service and vos
- add these methods to RPC
- fix privilageException message in ServiceManagerEntry, method
  getDataWithGroups
Merge pull request #356 from stavamichal/getDataWithVoAttributes

Add new methods for get data with Vos