Better roads - UK edition

Builds upon my better roads mod, with variety of changes to improve the visual appearance of roads with a UK flavour. Also removes the end date from old roads, adds a new road set for mid game and adds asymetrical roads. Note that you should unsubscribe from my original better roads if you want to use this one. Changes include: All roads retextured with UK road markings. A new mid game road set, starting 1920. Features early tarmac roads for better historical accuracy, with modern roads are now available at 1970. Asymetric roads added, which allow you to create dedicated turn lanes and better plan traffic flow. End year removed from all roads. New, clearer UI icons. If you prefer end dates on old roads, rather than them being available indefinitely, use this version: https://steamcommunity.com/sharedfiles/filedetails/?id=2233170445