[Elections] Add a "none of the above" option?

[Daniel Vainsencher]

Hi everyone, I think that regardless of the number of candidates we get, 
we should add a "none of the above" option to the vote.

Cons: Someone might lose to this option and feel rejected.

Pros: Everyone that beats it will feel more actively endorsed by the 
community. A truly terrible candidate cannot be elected by default. 
Voters have an explicit way to say they want other candidates.

What does everyone else think?

Daniel