Show nick and values in the lobby's user profile lookup

[Vladislav Belov]

Few issues about user profile lookup:

1. When you open the user profile lookup in the first time, you just see param names without values (even without "N/A"), it looks weird enough.
2. When you try to search someone and don't find him more than 2x times you don't know that it was real search, so it needs to add a message like "Player %(nick)s not found" instead of "Player not found" to make the form more responsible.