updated Osaka road textures
* Fixes ART-564 'Footpath ends are lit up when night mode is active'
* Change to atlas for junction separation marker ready for latest road lane geometry. This only affects 3-lane road region of texture, which isn't used in Japan, so is backwards-compatible with existing Japan road builds.
Buddy: Greg
Merge branch 'master' of https://github.com/eegeo/environment-themes