Named security levels

Similar to how web-boards sometimes display a "title" along with a user's name (e.g. "admin", "new user", etc.), we could display a short description (e.g. in message headers, user profile viewers) that correlates with a user's security level. e.g. in main.ini

[level:0]
desc=Nobody
[level:50]
desc=New user
[level:51]
desc=Validated user
[level:90]
desc=Co-Sysop
[level:99]
desc=Sysop

Fill-in/duplicate descriptions for ranges of levels?

added feature label

assigned to @rswindell