Pagination should conform to Relay Specifications (Connection)

[jcrygier]

Currently, Pagination follows the Spring methodology for passing variables around. However, Facebook's Relay project (https://facebook.github.io/relay/) takes a slightly different approach.

This approach is detailed in: https://facebook.github.io/relay/graphql/connections.htm. This uses a 'limit' parameter (similar to size) and a 'cursor' parameter, where we can jam in the ID or 'page' parameter.