Show route stops and predicted times

[vchernetsky]

Initial proposal for UI/UX:

• Display stops for calculated route as icon points. There might be a short stop id info incorporated into the icon.
• When clicked on particular stop icon - display a popup with the info for selected stop/route.
• The info in the popup includes predicted times of the next arriving vehicles at this stop and other available information.

• The stop popup info is filtered by vehicles involved in the calculated route.

  The API description to get necessary info is in #59