Enabling Streaming support for Paged Traversals

From https://github.com/neo4j/neo4j/issues/862 it seems that streaming on paged traversals doesn't work. In fact the code never was written to enable it. What looks like a bug from the outside is actually simply missing implementation.

There's now a ListEntityRepresentation to represent the JSON list of nodes/rels that gets returned and this gets run through the standard output formatters.