Change distance display to at most two significant digits for distance

[whyceewhite]

The Trips listing displays the distance always with 2 digits after the decimal points. Only display the digits that are meaningful.

For example:

• 127.00 --> 127
• 3.02 --> 3.02
• 0.80 --> 0.8

No more than two places of the decimal places are shown. But, do not show any trailing zeros.