cache fetched content separately per locale.
cache fetched content separately per locale.

Otherwise pages with no localizations will override the default language
page if both copies are expired.

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