6404: RouteWayCostUnitConverter: Snap values between 0–1 to 1
Created by: teddywing
We use integer values for distance (kilometres) and time (minutes). If
the values aren't very big, like bus stops inside a city for example,
the integer conversion will put distance and time at 0, which isn't
correct.
To continue to use our chosen measurement units while still displaying
something that makes sense to users, snap any values >0 and <=1 to 1.
Refs #6404