Improve user search ordering
Improve user search ordering

Add tie-breaker based on last visit so online users (who are not invisible) are more visible when using prefix search.

nanaya/osu-web,LiquidPL/osu-web,LiquidPL/osu-web,ppy/osu-web,notbakaneko/osu-web,LiquidPL/osu-web,ppy/osu-web,ppy/osu-web,nanaya/osu-web,ppy/osu-web,nanaya/osu-web,notbakaneko/osu-web,notbakaneko/osu-web,LiquidPL/osu-web,nanaya/osu-web,ppy/osu-web,LiquidPL/osu-web,notbakaneko/osu-web,notbakaneko/osu-web,nanaya/osu-web