Localization/metadata issues

[anonymoussprocket]

• [x] Block.Validation pass
• [x] Operation.Pkh
• [x] Operation.Public key
• [x] Operation.Manager pub key
• [x] Baker.Grace period
• [ ] Balance Update.Source id
• [x] Ballot.Block Level reference definition
• [x] Operation Group.Hash reference definition to Operations.group hash (Conseil metadata)
• [x] Operations.Proposal should be hash data type (Conseil metadata)
• [x] Label Account.Manager as "legacy"