Map design TODOs

There's a couple of things we need from design to proceed with implementing existing and new features:

• Home and Work locations (how to add/edit/delete them)
• Design and assets to go the "current" location (the one that the map selects on startup)
• Assets (icons) for the destination map pin and the navigation blue arrow
• Assets for 3D/traffic icons
• How to stop the navigation, and transition back to 2D map view
• How to switch between map styles (e.g. normal/terrain/satellite)
• Would be nice to see some design for the secondary (cluster) screen