UTF-8 characters in listing names return an error

[jjeffryes]

When UTF-8 characters are present in a listing title, such as "Tajné plány", the contracts api rejects the data, and returns

{ "reason": "", "success": false }

Example characters: ¿ ö š ð ¬ ½

Client issue: https://github.com/OpenBazaar/OpenBazaar-Client/issues/1152#issuecomment-199829021

[chris-zeng]

Is this issue fixed? I am able to create an item listing with the name "Tajné plány".