Questions about optional fields on fetchers

[victorsenam]

Resolve the discussions proposed on this review.

[pedroteosousa]

I don't understand what you mean by optional fields on fetchers, I read the review and found no reference to this.

[victorsenam]

Ok, I see that this issue lacked explaining. There were two questions:

we worry about the possibility that a contest has endTime but no startTime? Doesn't make any sense to me, but should we maybe log it?

This scenario is ignored by both pull requests for the csacademy branch: #14 and #22. There was also another question that was:

A contest might be upcoming or running if it has a startTime but no endTime. Shouldn't some of this conditions be outside of the if on line 33 because of this? Or should contest.state be undefined on those scenarios?

This is adressed by #22. If a contest has no endTime it never leaves the RUNNING state. We should discuss if this is a good idea.