Nadeo Envimix Title Pack Update 10 (Leaderboard Phase 4)

Fixing the leaderboards. <3

- Activity leaderboard implemented
- Skillpoints splittted leaderboard implemented
- Now you can see your total amount of activity points
- Added reward tooltips for last unvalidated tracks
- Added skillpoint counters in ingame menu
- Replays button moved into main menu, Statistics button removed
- Removed the old skin concept (to keep Stadium's purity)
- Custom Cars feature scrapped completly, will come back after title pack rework
- Old profile UI is back which also shows some statistics finally yay
- Fixed some possible but missing translations, including one in the endscreen to keep fixing endscreen every fukin update