add claimant contact details to claim
refactor setting element class and id attributes
added claiment contact section to form
add legal_costs to model
add legal costs to form with format validation
Renamed claimant contact address in the PDF form
Renamed additional fields in the PDF form

As per Pivotal Tracker ticket #66409710
Solicitor's cost form field renamed

Also amended the test PDF pre-filled form
Merge pull request #58 from ministryofjustice/claiment_correspondence_details

Claiment correspondence details