Hide username in logs

[brliron]

Many people in the #support channel of thcrap don't like to have their username seen. They'll often edit their screenshots to hide their username in the file explorer. I'm guessing their username is either their first name, their last name, or both, and not spreading those everywhere can be a good idea.

But that username is also in the thcrap log file, which we often ask for in #support. In order to help these people, we should hide the username in the log files. It's not like we need the username, seeing a path like C:\Users\%USERNAME%\Downloads\thcrap\thcrap_loader.exe en.js th06 is just as useful for us.

[lilyremigia]

To add to this, %userprofile% is C:/Users/%username%. As such, it is probably a better idea to search for that, and replace it with that.