Abonner for at downloade
extraQL userscripts

Enhances QuakeLive with additional console commands and UI automation.
It also allows you to switch between the installed translated/alternative QL UIs.
(This is in no cheat and does not change gameplay in any way.)
Documentation + Source code[github.com]

After downloading you can start extraQL by creating a desktop shortcut to
c:\program files (x86)\Steam\SteamApps\workshop\content\282440\539252269\extraQL.exe

NOTE: Changing Steam nicknames only works when extraQL and the Steam Client run under the same user account and the same permissions. It won't work if one runs as Admin and the other doesn't.