rpc: Include null votes in votehistory current/future
rpc: Include null votes in votehistory current/future

tecnovert/particl-core,particl/particl-core,particl/particl-core,tecnovert/particl-core,particl/particl-core,tecnovert/particl-core,particl/particl-core,tecnovert/particl-core,particl/particl-core,tecnovert/particl-core,particl/particl-core,tecnovert/particl-core