Endurance fixes

Fixes arrival and finish time validation warning in Clear Round.

This already support the established convention to put the min time on the last gate, and the max time on the first gate.

Screenshot 2019-09-06 at 13.44.01.png

Screenshot 2019-09-06 at 13.42.12.png

Fetch start time given in the start list as departure time on the first gate, will fallback to start time on the gate as before.

Screenshot 2019-09-06 at 14.16.38.png