apps/votes/forms: added three-input-boxes widget to voting form
apps/votes/forms: added three-input-boxes widget to voting form

apps/votes/forms: define minlength on VotingTokenWidget and remove maxlength from token form field to make it use the one from widget

apps/votes/forms: removed size and n variable from widget

liqd/a4-meinberlin,liqd/a4-meinberlin,liqd/a4-meinberlin,liqd/a4-meinberlin