Include support for pagination when listing resources a user has a role in

[xcoulon]

This is a follow-up of #545: the response will contain all resources of the given type in which the user has a role (any role), but we should limit the number of results in the response using the page[offset] and page[limit] query params (with default values provided by https://github.com/fabric8-services/fabric8-auth/blob/master/controller/paging.go#L21)