Stub Fee Group Reference and ET Office service used for "Apply to an employment tribunal" development.
To obtain a fee group reference and office details do a POST to /1/fgr-office with a post code in the postcode POST param, e.g.
curl -vd 'postcode=SW1 1AA' localhost:9292/1/fgr-office
To trigger an error response, make a request with the post code 'ER0 0RR'
curl -vd 'postcode=ER0 0RR' localhost:9292/1/fgr-office