Omitted spaces around delimiters. Renamed class to UT2004.
Checking for existing config file. Using simple line by line reading/writing now, because the ut config file format is seriously incompatible with the python configparser (duplicates, case-insensivity, commented lines, ...).
No longer default values. Explicit is nicer.
Using erstiquake.sh as template: added cli params to set up quake3.