Minor quality of life updates

The new version addresses some feedback I received in the past week, and fixes some issues I noticed myself:

• The adventure stats sidebar is now color-coded
• Reduced screen height a bit to fit it onto smaller Mac screens in full
• Fixed the bug with adventure stats sidebar not refreshing when using resource collection icons
• Opponents on the battlefield have their quantity written in cyan
• Selling food and goods happens at the advertised rate now, instead of always being 1 for 1
• Cities now have variable budget per week, which is lower on average than the previous value

This will likely be the last update on the game, gonna move on / move back to previous project.