Changes

|EventIndex which determines used set of 's set indexmaster' attributes, like 'minimal spawn distance' or 'probability' (see /def/world/journey_road_event_master. Events in different sets are allowed to spawn at the same road segment at the same timesii). Currently only 2 values are supported: 0 - 'standard' events; 1 - 'visual effects' (road decals, etc.)