upgrade visualization ranking
allow null for portarit_photo
Merge pull request #163 from ciudadanointeligente/custom_candidate_ribbon

allow null for portarit_photo
Merge pull request #162 from ciudadanointeligente/ranking-upgrade

upgrade visualization ranking
add message for knowing other question to a candidate
Merge branch 'master' of https://github.com/ciudadanointeligente/votainteligente-portal-electoral into profile-update