Aliases Warning needs update

[tritu]

The name of the alias may only consist of the characters a-z, A-Z and 0-9. But if I put in invalid characters of '-' or '_', the warning is still showing that it's allowed with - or _ in the warning diaglog

The alias name may only consist of the characters a-z, A-Z, 0-9, -, _.

[regis]

I too have this issue on 1.0.1-SNAPSHOT-02-14-2007