Fix Config::activate to not check nonexistant options.
Fix Config::activate to not check nonexistant options.

DDVTECH/mistserver,DDVTECH/mistserver,rbouqueau/libdtsc_xp,DDVTECH/mistserver,DDVTECH/mistserver,rbouqueau/libdtsc_xp,DDVTECH/mistserver,rbouqueau/libdtsc_xp