Added company_name to ClaimantContact model

Added the limit to the company name of 60 characters.
This limit can be changed later, as needed.
Formatting of ClaimantContact#as_json
ClaimantContact company address feature test
poltergeist for remote feature tests
Merge pull request #135 from ministryofjustice/feature_test_runner

poltergeist for remote feature tests
Merge pull request #134 from ministryofjustice/67926840/add-company-name-field

67926840/add company name field
merging from master
updated results