Demo update notes for v0.41

[p]Truck City v0.41-Demo has just been released. This is the change log:[/p]

• [p]Balance: easier or faster research for Production Speed, Production Efficiency, Production Synergies, and Financial derivatives[/p]
• [p]Balance: reduced effect for the Financial Derivatives research (+15% per level to +10%)[/p]
• [p]Improvement: many UI improvements: science window, minimap, trucks list, products list, research center production building tooltip, blueprints window[/p]
• [p]Improvement: truck navigation improved[/p]
• [p]Bugfix: fixed truck spawning and despawning when using the road out of town, depending on market imports and exports configuration[/p]
• [p]Bugfix: trucks may enter an endless loop of entering the city and then immediately leaving again, or enter and then stop forever. Fixed.[/p]
• [p]Improvement: nuke now despawns trucks too[/p]
• [p]Bugfix: containers may appear "floating" at the road out of town, fixed[/p]
• [p]Improvement: improved scrolling with middle mouse button, WASD, and zooming in and out.[/p]
• [p]Improvement: changed tutorial to improve clarity[/p]
• [p]Bugfix: blueprint deletion in blueprints menu may fail, fixed[/p]
• [p]Bugfix: market priority was not correctly set when loading a savegame[/p]
• [p]Bugfix: ETA may show negative numbers, fixed[/p]
• [p]Bugfix: some SFX may play when they shouldn't, fixed[/p]
• [p]Improvement: translations[/p]