Remember selected Leaderboard

[tieb62]

Currently each time we open the app, the first time of clicking on the leaderboards button it always goes back to all-time English leaderboard.

It's getting annoying to always have to, not only re-select daily, but then also re-select always the same language.

I think a really good improvement would be to always pre-select the current used language for tests as the daily leaderboard.
And maybe automatically set you to daily if you just finished a test that ranked you in the daily leaderboard.