Improving management of time of day waiting points

It will no more necessary to always stop at a time-of-day waiting point, even if that time has already been passed, to get the signal open. The signal will open at the correct hour, provided that the train has already reserved the section before the signal, and that the signal is the first in front of the train.

Discussion: http://www.elvastower.com/forums/index.php?/topic/28543-improving-management-of-absolute-waiting-points/
Roadmap: https://trello.com/c/Ag6Me7j1/200-improving-management-of-time-of-day-waiting-points