Merge pull request #25 from ciudadanointeligente/frontend

Frontend: featured elections
add function for display information of two candidates
comment the percentage area
fix problem that display duplicated candidate in first selector
Merge branch 'frente-a-frente-js'
Merge pull request #27 from ciudadanointeligente/jdgarrido

integration of face to face js
Merge branch 'master' into frontend