* Problem: `run_upsert_validator_approve` was getting the voting power in a convoluted way
Solution: Changed it to get the voting power from the election outputs
* Problem: `run_upsert_validator_approve` casts votes for *all* voters, not just the user calling the command
Solution: Filter vote txs by the users public key
* Problem: Docs needed a more specific description of how to input the path to the private-key file
Solution: Changed the wording a bit
* Problem: Source files contain no license info
Solution: Add comments with SPDX license info to source files
* Python 3 files don't need # -*- coding: utf-8 -*-
* Problem: Node operator cannot vote on a ValidatorElection
Solution: Implement validator election voting spec
* Problem: Incorrent code comments
Solution: Update comments with correct context
* Problem: Delegated vote not casted back to election
Solution: Update test to cast votes back to election id and assert their validity
