[config] Set default value null for learnMoreUrl. Closes #837
[config] Set default value null for learnMoreUrl. Closes #837

vntrp/app,ben-pr-p/app,DemocraciaEnRed/comunas,Nicolas-Lebreton/app,DemocraciaEnRed/bahiablanca,moustachu/democracy-os-app,piratenfraktion-nrw/app,mbhicks90/myvotes.ca,DemocracyOS/app,huulbaek/app,ben-pr-p/app,vntrp/app,atlatszo/evoks,huulbaek/app,radvansky-tomas/app,solde9/app,valentinchaput/app,mbhicks90/myvotes.ca,PartidoDeLaRed/app,solde9/app,MareAtlantica/democracyos,ManuH/app,alexproca/democracy-os,fonorobert/evoks,ManuH/app,EuParticipo/Caxias,PartidoDeLaRed/app,indiofran/app,beomjae/app,beomjae/app,indiofran/app,atlatszo/evoks,dkrathi457/app,Nicolas-Lebreton/app,josuedor/app,dkrathi457/app,moustachu/democracy-os-app,radvansky-tomas/app,piratenfraktion-nrw/app,DemocraciaEnRed/bahiablanca,EuParticipo/Caxias,AbraaoAlves/app,josuedor/app,valentinchaput/app,fonorobert/evoks,DemocraciaEnRed/comunas,alexproca/democracy-os,MareAtlantica/democracyos,AbraaoAlves/app,DemocracyOS/app