Fix submitVote function. User can vote feedback only once.
Fix submitVote function. User can vote feedback only once.

Digipalvelutehdas/APIKA,Digipalvelutehdas/APIKA,Digipalvelutehdas/apika-dashboard,Digipalvelutehdas/APIKA,Digipalvelutehdas/apika-dashboard