[citizen:endpoint] - Add lookup endpoint by participants. #155
[citizen:endpoint] - Add lookup endpoint by participants. #155

CivicTechFR/DemocracyOSFR,120photo/app,radvansky-tomas/app,DemocraciaEnRed/bahiablanca,Nicolas-Lebreton/app,dkrathi457/app,dkrathi457/app,johnardavies/democracyos-podemos,CivicTechFR/DemocracyOSFR,beomjae/app,mbhicks90/myvotes.ca,atlatszo/evoks,MareAtlantica/democracyos,valentinchaput/app,mairwilliams/app,mxabierto/colaborativa,120photo/app,okfn-brasil/euvoto,huulbaek/app,AbraaoAlves/app,atlatszo/evoks,PartidoDeLaRed/app,moustachu/democracy-os-app,mairwilliams/app,DemocraciaEnRed/comunas,ben-pr-p/app,fonorobert/evoks,AbraaoAlves/app,moustachu/democracy-os-app,mbhicks90/myvotes.ca,ManuH/app,radvansky-tomas/app,10Pines/app,josuedor/app,indiofran/app,vntrp/app,solde9/app,piratenfraktion-nrw/app,beomjae/app,josuedor/app,DemocraciaEnRed/comunas,PartidoDeLaRed/app,DemocracyOS/app,fonorobert/evoks,kant/app,d-cent/democracyos,huulbaek/app,alexproca/democracy-os,maiklaguna/app,DemocracyOS/app,mgarciaisaia/democracy-os-ues,piratenfraktion-nrw/app,ManuH/app,vntrp/app,valentinchaput/app,johnardavies/democracyos-podemos,ben-pr-p/app,DemocraciaEnRed/bahiablanca,EuParticipo/Caxias,okfn-brasil/euvoto,alexproca/democracy-os,Nicolas-Lebreton/app,kant/app,EuParticipo/Caxias,solde9/app,indiofran/app,MareAtlantica/democracyos