Corrected whois.fi 'Unknown status' error message
Added support for 'Grace Period' status to whois.fi
Corrected whois.fi spec for empty name field
Renamed status_graceperiod tests to property_status_graceperiod
Merge pull request #252 from Pietr/whois.fi-new-status-grace-period

Whois.fi should support 'Grace Period' status