Metro Itinerary: result categories should not vary with language

[binh-dam-ibigroup]

The order of the results in the Metro Itinerary seems to change with language, and that behavior is not desired.

The first screenshots has the following categories:

1. Walk + transit
2. Drive + Transit
3. Other, including the walk-only itinerary

The second screenshot (French) has instead:

1. Wak + transit
2. Walk-only
3. Drive + Transit
4. Other (empty section, not shown)

[miles-grant-ibigroup]

This is because we are using the existence of a space to determine if it's a single mode or not... We need a better solution