Changes

 Attribute changes: * Added '''cargo_damage_cost'' attribute defining how much money player has to pay to for 1% of the damage.* Added '''cargo_damage_cost_factor''' attribute defining factor damage penalty is multiplied with every 1% of the damage.* Added '''exp_park_load_bonus''' attribute defining how big XP bonus player gets for parking trailer during loading of the job.* Added '''revenue_per_km_base''' attribute defining base revenue per km for the ai drivers.* Added '''revenue_coef_per_km''' attribute defining salary coefficient per km for the freight market and online jobs.* Added '''cargo_market_revenue_coef_per_km''' attribute defining salary coefficient per km for the cargo market jobs.* Added '''driver_revenue_coef_per_km''' attribute defining salary coefficient for ai drivers and players quick jobs.* Added '''driver_cargo_market_revenue_coef_per_km''' attribute defining salary coefficient for ai drivers cargo market jobs.* Removed '''revenue_per_km'''.* Removed '''driver_revenue_per_km'''.* Removed '''brands array was removed''', game will now collect truck&and trailer brands on startup from <code>/def/vehicle/truck_dealers </code> and <code>/def/vehicle/trailer_dealers, each </code> directories. Each directory inside that can be interpret as token is a new brand.