Handle routes with no time

[adeebshihadeh]

Since openpilot 0.9.7 removed RTC support, some routes can have no time (e.g. the device just booted up and didn't get a GPS fix during the route).

Since openpilot's uploader guarantees that routes are uploaded in the order they were created, we can still show all routes in the correct sequence using the create_time attribute of the route.

Requirements

• hide the date/time
• show "timeless" routes in the correct order with the rest of routes

[LoganxDev]

New vs. old comparison.

[jwooning]

fixed in #96