Page link response value

[phendrick]

{ "name": "page_link_field", "label": "Page Link Field", "class": "page_link", "value": "http://docs.demo.rooftopcms.io/2016/08/17/hello-world/", "relationship": { "type": "post", "class": "all" } }

We need to sanitise this url so that we're returning an id and slug that can be consumed by the client in a url agnostic way.