Update to version 60 (experience for single game)

Changes: - added experience points for solo games! - changed tyre friction (cars have better grip) - added one spawnable haystack in Osmicka map (cut all grass on middle roofs) - added easter egg in Osmicka map (hint: sunflower) - added experimental controller support - fixed wheel upgrade for Cutter - fixed middle collision in Column map (you could fall inside sometime) - rearranged maps in host menu - removed uncollectable haystacks from Osmicka map - tested and aligned all playerstarts in Sky Blocks map (sometimes caused bugs)