Tests: added domains.check
Tests: less radical domains.update content

Country change affects domains.register text format checks
Tests: added domains.register taken
Tests: added domains.register available
Tests: added domains.renew
Tests: added domain.autorenew
Fixed domains.register callback data
Fixed domains.renew callback data
Fixed domains.autorenew call and return data
Break out error overrides
domains.check 404 is not an error
Merge branch 'master' into Tests