Layer with bus route

```
User should be able to add route(s) of bus(es) to the map by selecting its 
number from list.
This will be useful if user wants to find nearest bus stop for given transport.
```

Original issue reported on code.google.com by `1.Pla...@gmail.com` on 15 Oct 2010 at 9:30
- Blocked on: #10
