Quakelive Config cleaner

Clean your or someone else's junky config which is generated by QUAKE LIVE. Filters out all the non-existant, outdated, user-made cvars and those which don't really matter(sv_, ui_, bot_, g_, joy_)

Note that binds or aliases do not get transferred either, only ingame cvars

Show default values for all cvars
Do not delete cvars with default values
Do not delete binds