Feature: On Block Validators list, add indication of vote, who was proposer for block

[ghost]

Summary

On Block Validators list, add indication of vote (true/false, or rather an icon to denote that) and who was the proposer for the block (an icon on the matching validator).

Problem Definition

Currently the Validator list on a block shows no information beyond they were a part of the validator set. We should show which validators voted, and which validator was the proposer.

Proposal

• Add an icon to denote a true/false that they voted
  • will come from the validator object itself as voted: Boolean
• Add an icon to denote the validator that is the proposer
  • match on the proposer from block detail

Depends on provenance-io/explorer-service#183

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned