Erroneous behavior regarding the project slug validation

Current behavior

Trying to create a project named Ĝuo, the server respond : Path can contain only letters, digits, '_', '-' and '.'. Cannot start with '-', end in '.git' or end in '.atom'. Indeed, the project slug was automatically changed into -uo. Trying to turn it into ĝuo lead to the same result.

Expected results

• the automatically generated slug should be valid
• either the error feedback message should be changed to precise that only ASCII letters are accepted, or the slug should allow any unicode [[:alpha:]]